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                      COMMON SECURITIES GUARANTEE AGREEMENT


           This GUARANTEE AGREEMENT (the "Common Securities Guarantee"), dated
as of _________, 1996, is executed and delivered by American Financial Group,
Inc., an Ohio corporation (the "Guarantor"), and _______________, as trustee
(the "Common Guarantee Trustee"), for the benefit of the Holders (as defined
herein) of the Common Securities (as defined herein) of American Financial
Capital Trust I, a Delaware statutory business trust (the "Issuer").

           WHEREAS, pursuant to the Declaration (as defined herein), the Issuer
is issuing on the date hereof 4,000,000 preferred securities, having an
aggregate liquidation amount of $100,000,000, designated the ____% Trust
Originated Preferred Securities (the "Preferred Securities") and ______ common
securities, having an aggregate liquidation amount of $________, designated the
___% Trust Originated Common Securities (the "Common Securities");

           WHEREAS, as incentive for the Holders to purchase the Common
Securities, the Guarantor desires irrevocably and unconditionally to agree, to
the extent set forth in this Common Securities Guarantee, to pay to the Holders
of the Common Securities the Guarantee Payments (as defined herein) and to make
certain other payments on the terms and conditions set forth herein; and

           WHEREAS, the Guarantor is also executing and delivering a guarantee
agreement (as amended, modified or supplemented from time to time, the
"Preferred Securities Guarantee") in substantially identical terms to this
Common Securities Guarantee for the benefit of the holders of the Preferred
Securities, except that if an Event of Default (as defined in the Declaration)
has occurred and is continuing, the rights of Holders of the Common Securities
to receive Guarantee Payments under this Common Securities Guarantee are
subordinated to the rights of holders of the Preferred Securities to receive
payments under the Preferred Securities Guarantee.

           NOW, THEREFORE, in consideration of the purchase by each Holder of
Common Securities, which purchase the Guarantor hereby agrees shall benefit the
Guarantor, the Guarantor executes and delivers this Common Securities Guarantee
for the benefit of the Holders.


                                    ARTICLE 1
                         INTERPRETATION AND DEFINITIONS

SECTION 1.1         Interpretation and Definitions.

           In this Common Securities Guarantee, unless the context otherwise
requires:

           (a) capitalized terms used in this Common Securities Guarantee but
           not defined in the preamble above have the respective meanings
           assigned to them in this Section 1.1;


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         (b) a term defined anywhere in this Common Securities Guarantee has the
         same meaning throughout;

         (c) all references to "the Common Securities Guarantee" or "this Common
         Securities Guarantee" are to this Common Securities Guarantee as
         modified, supplemented or amended from time to time;

         (d) all references in this Common Securities Guarantee to Articles and
         Sections are to Articles and Sections of this Common Securities
         Guarantee, unless otherwise specified;

         (e) a term defined in the Trust Indenture Act has the same meaning when
         used in this Common Securities Guarantee, unless otherwise defined in
         this Common Securities Guarantee or unless the context otherwise
         requires; and

         (f) a reference to the singular includes the plural and vice versa.

         "Affiliate" has the same meaning as given to that term in Rule 405 of
the Securities Act of 1933, as amended, or any successor rule thereunder.

         "Business Day" means any day other than a day on which banking
institutions in New York, New York are authorized or required by law to close.

         "Common Guarantee Trustee" means _____________________, until a
Successor Common Guarantee Trustee has been appointed and has accepted such
appointment pursuant to the terms of this Common Securities Guarantee and
thereafter means each such Successor Common Guarantee Trustee.

         "Corporate Trust Office" means the office of the Common Guarantee
Trustee at which the corporate trust business of the Common Guarantee Trustee
shall at any particular time, be principally administered, which office at the
date of execution of this Common Securities Guarantee is located at
_______________________________, Attention: Corporate Trust Services Division;
telecopy no. ___________________.

         "Covered Person" means any Holder or beneficial owner of Common
Securities.

         "Debentures" means the series of subordinated deferrable interest
debentures to be issued by the Guarantor designated the ____% Junior
Subordinated Debentures due 2026 held by the Property Trustee (as defined in the
Declaration) of the Issuer.

         "Declaration" means the Declaration of Trust, dated as of September __,
1996, as amended, modified or supplemented from time to time, among the trustees
of the Issuer named therein, the Guarantor, as sponsor, and the holders from
time to time of undivided beneficial interests in the assets of the Issuer.


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           "Guarantee Event of Default" means a default by the Guarantor on any
of its payment or other obligations under this Common Securities Guarantee.

           "Guarantee Payments" means the following payments or distributions,
without duplication, with respect to the Common Securities, to the extent not
paid or made by the Issuer: (i) any accrued and unpaid Distributions (as defined
in the Declaration) that are required to be paid on such Common Securities to
the extent the Issuer shall have funds available therefor, (ii) the redemption
price, including all accrued and unpaid Distributions to the date of redemption
(the "Redemption Price") to the extent the Issuer has funds available therefor,
with respect to any Common Securities called for redemption by the Issuer, and
(iii) upon a voluntary or involuntary dissolution, winding-up or termination of
the Issuer (other than in connection with the distribution of Debentures to the
Holders in exchange for Common Securities as provided in the Declaration or the
redemption of all the Common Securities upon maturity or redemption of the
Debentures as provided in the Declaration), the lesser of (a) the aggregate of
the liquidation amount and all accrued and unpaid Distributions on the Common
Securities to the date of payment, to the extent the Issuer shall have funds
available therefor, and (b) the amount of assets of the Issuer remaining
available for distribution to Holders in liquidation of the Issuer (in either
case, the "Liquidation Distribution"). If an Event of Default (as defined in the
Declaration) has occurred and is continuing, the rights of Holders of the Common
Securities to receive Guarantee Payments under this Common Securities Guarantee
are subordinated to the rights of holders of the Preferred Securities to receive
payments under the Preferred Securities Guarantee.

           "Holder" shall mean any holder, as registered on the books and
records of the Issuer of any Common Securities.

           "Indemnified Person" means the Common Guarantee Trustee, any
Affiliate of the Common Guarantee Trustee, or any officers, directors,
shareholders, members, partners, employees, representatives, nominees,
custodians or agents of the Common Guarantee Trustee.

           "Indenture" means the Indenture dated as of _____, 1996, among the
Guarantor (the "Debenture Issuer") and ____________________, as trustee, and any
indenture supplemental thereto pursuant to which the Debentures are to be issued
to the Property Trustee (as defined in the Declaration) of the Issuer.

           "Majority in Liquidation Amount of the Common Securities" means,
except as provided in the terms of the Common Securities or by the Trust
Indenture Act, Holder(s) of outstanding Common Securities, voting separately as
a class, who are the record holders of more than 50% of the aggregate
liquidation amount (including the stated amount that would be paid on
redemption, liquidation or otherwise, plus accrued and unpaid Distributions to
the date upon which the voting percentages are determined) of all outstanding
Common Securities.

           "Officers' Certificate" means, with respect to any Person, a
certificate signed by two Authorized Officers (as defined in the Declaration) of
such Person. Any Officers' Certificate

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delivered with respect to compliance with a condition or covenant provided for
in this Common Securities Guarantee shall include:

                    (a) a statement that each officer signing the Officers'
                    Certificate has read the covenant or condition and the
                    definitions relating thereto;

                    (b) a brief statement of the nature and scope of the
                    examination or investigation undertaken by each officer in
                    rendering the Officers' Certificate;

                    (c) a statement that each such officer has made such
                    examination or investigation as, in such officer's opinion,
                    is necessary to enable such officer to express an informed
                    opinion as to whether or not such covenant or condition has
                    been complied with; and

                    (d) a statement as to whether, in the opinion of each such
                    officer, such condition or covenant has been complied with.

           "Person" means a legal person, including any individual, corporation,
estate, partnership, joint venture, association, joint stock company, limited
liability company, trust, unincorporated association, or government or any
agency or political subdivision thereof, or any other entity of whatever nature.

           "Responsible Officer" means, with respect to the Common Guarantee
Trustee, any officer within the Corporate Trust Office of the Common Guarantee
Trustee, including any vice president, any assistant vice president, the
secretary, any assistant secretary, the treasurer, any assistant treasurer or
other officer of the Corporate Trust Office of the Common Guarantee Trustee
customarily performing functions similar to those performed by any of the above
designated officers and also means, with respect to a particular corporate trust
matter, any other officer to whom such matter is referred because of that
officer's knowledge of and familiarity with the particular subject.

           "Successor Common Guarantee Trustee" means a successor Common
Guarantee Trustee possessing the qualifications to act as Common Guarantee
Trustee under Section 4.1.

           "Trust Indenture Act" means the Trust Indenture Act of 1939, as
amended from time to time, or any successor legislation.



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                                    ARTICLE 2
                               TRUST INDENTURE ACT

SECTION 2.1         Trust Indenture Act; Application.

           (a) This Common Securities Guarantee is subject to the provisions of
the Trust Indenture Act that are required to be part of this Common Securities
Guarantee and shall, to the extent applicable, be governed by such provisions.

           (b) If and to the extent that any provision of this Common Securities
Guarantee limits, qualifies or conflicts with the duties imposed by Sections 310
to 317, inclusive, of the Trust Indenture Act, such imposed duties shall
control.

SECTION 2.2         Lists of Holders of Securities.

           (a) The Guarantor shall provide the Common Guarantee Trustee with a
list, in such form as the Common Guarantee Trustee may reasonably require, of
the names and addresses of the Holders of the Common Securities ("List of
Holders"), (i) within one Business Day after January 1 and June 30 of each year
and current as of such date, and (ii) at any other time, within 30 days of
receipt by the Guarantor of a written request from the Common Guarantee Trustee
for a List of Holders as of a date no more than 14 days before such List of
Holders is given to the Common Guarantee Trustee; provided, that the Guarantor
shall not be obligated to provide such List of Holders at any time the List of
Holders does not differ from the most recent List of Holders given to the Common
Guarantee Trustee by the Guarantor. The Common Guarantee Trustee shall preserve,
in as current a form as is reasonably practicable, all information contained in
Lists of Holders given to it, provided that it may destroy any List of Holders
previously given to it on receipt of a new List of Holders.

           (b) The Common Guarantee Trustee shall comply with its obligations
under Section 311(a), 311(b) and Section 312(b) of the Trust Indenture Act.

SECTION 2.3         Reports by Common Guarantee Trustee.

           Within 60 days after May 15 of each year (commencing with the year of
the first anniversary of the issuance of the Common Securities), the Common
Guarantee Trustee shall provide to the Holders of the Common Securities such
reports as are required by Section 313 of the Trust Indenture Act; if any, in
the form and in the manner provided by Section 313 of the Trust Indenture Act.
The Common Guarantee Trustee shall also comply with the requirements of Section
313(d) of the Trust Indenture Act.

SECTION 2.4         Periodic Reports to Common Guarantee Trustee.

           The Guarantor shall provide to the Common Guarantee Trustee such
documents, reports and information as required by Section 314 (if any) of the
Trust Indenture Act and the compliance

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certificate required by Section 314 of the Trust Indenture Act in the form, in
the manner and at the times required by Section 314 of the Trust Indenture Act.

SECTION 2.5 Evidence of Compliance with Conditions Precedent.

           The Guarantor shall provide to the Common Guarantee Trustee such
evidence of compliance with any conditions precedent, if any, provided for in
this Common Securities Guarantee that relate to any of the matters set forth in
Section 314(c) of the Trust Indenture Act. Any certificate or opinion required
to be given by an officer pursuant to Section 314(c)( 1) may be given in the
form of an Officers' Certificate.

SECTION 2.6         Guarantee Event of Default; Waiver.

           The Holders of a Majority in Liquidation Amount of the Common
Securities may, by vote, on behalf of the Holders of all of the Common
Securities, waive any past Guarantee Event of Default and its consequences. Upon
such waiver, any such Guarantee Event of Default shall cease to exist, and any
Guarantee Event of Default arising therefrom shall be deemed to have been cured,
for every purpose of this Common Securities Guarantee, but no such waiver shall
extend to any subsequent or other default or Guarantee Event of Default or
impair any right consequent thereon.

SECTION 2.7         Guarantee Event of Default; Notice.

           (a) The Common Guarantee Trustee shall, within 90 days after the
occurrence of a Guarantee Event of Default, transmit by mail, first class
postage prepaid, to the Holders of the Common Securities, notices of all
Guarantee Events of Default actually known to a Responsible Officer of the
Common Guarantee Trustee, unless such defaults have been cured before the giving
of such notice; provided, that the Common Guarantee Trustee shall be protected
in withholding such notice if and so long as a Responsible Officer of the Common
Guarantee Trustee in good faith determines that the withholding of such notice
is in the interests of the Holders of the Common Securities.

           (b) The Common Guarantee Trustee shall not be deemed to have
knowledge of any Guarantee Event of Default unless the Common Guarantee Trustee
shall have received written notice thereof or a Responsible Officer of the
Common Guarantee Trustee charged with the administration of the Declaration
shall have obtained actual knowledge thereof.

SECTION 2.8         Conflicting Interests.

           The Declaration shall be deemed to be specifically described in this
Common Securities Guarantee for the purposes of clause (i) of the first
provision contained in Section 310(b) of the Trust Indenture Act.


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SECTION 2.9         Disclosure of Information.

           The disclosure of information as to the names and addresses of the
Holders of the Common Securities in accordance with Section 312 of the Trust
Indenture Act, regardless of the source from which such information was derived,
shall not be deemed to be a violation of any existing law, or any law hereafter
enacted which does not specifically refer to Section 312 of the Trust Indenture
Act, nor shall the Common Guarantee Trustee be held accountable by reason of
mailing any material pursuant to a request made under Section 312(b) of the
Trust Indenture Act.

SECTION 2.10        Common Guarantee Trustee May File Proofs of Claim.

           Upon the occurrence of a Guarantee Event of Default, the Common
Guarantee Trustee is hereby authorized to (a) recover judgment, in its own name
and as trustee of an express trust, against the Guarantor for the whole amount
of any Guarantee Payments remaining unpaid and (b) file such proofs of claim and
other papers or documents as may be necessary or advisable in order to have its
claims and those of the Holders of the Common Securities allowed in any judicial
proceedings relative to the Guarantor, its creditors or its property.


                                    ARTICLE 3
                          POWERS, DUTIES AND RIGHTS OF
                            COMMON GUARANTEE TRUSTEE

SECTION 3.1         Powers and Duties of Common Guarantee Trustee.

           (a) This Common Securities Guarantee shall be held by the Common
Guarantee Trustee on behalf of the Issuer for the benefit of the Holders of the
Common Securities, and the Common Guarantee Trustee shall not transfer this
Common Securities Guarantee to any Person except a Holder of Common Securities
exercising his or her rights pursuant to Section 5.4(b) or to a Successor Common
Guarantee Trustee on acceptance by such Successor Common Guarantee Trustee of
its appointment to act as Successor Common Guarantee Trustee. The right, title
and interest of the Common Guarantee Trustee in and to this Common Securities
Guarantee shall automatically vest in any Successor Common Guarantee Trustee,
and such vesting and cessation of title shall be effective whether or not
conveyancing documents have been executed and delivered pursuant to the
appointment of such Successor Common Guarantee Trustee.

           (b) If a Guarantee Event of Default actually known to a Responsible
Officer of the Common Guarantee Trustee has occurred and is continuing, the
Common Guarantee Trustee shall enforce this Common Securities Guarantee for the
benefit of the Holders of the Common Securities.

           (c) The Common Guarantee Trustee, before the occurrence of any
Guarantee Event of Default and after the curing of all Guarantee Events of
Default that may have occurred, shall undertake to perform only such duties as
are specifically set forth in this Common Securities Guarantee, and no implied
covenants shall be read into this Common Securities Guarantee against

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the Common Guarantee Trustee. In case a Guarantee Event of Default has occurred
(that has not been cured or waived pursuant to Section 2.6) and is actually
known to a Responsible Officer of the Common Guarantee Trustee, the Common
Guarantee Trustee shall exercise such of the rights and powers vested in it by
this Common Securities Guarantee, and use the same degree of care and skill in
its exercise thereof, as a prudent person would exercise or use under the
circumstances in the conduct of his or her own affairs.

           (d) No provision of this Common Securities Guarantee shall be
construed to relieve the Common Guarantee Trustee from liability for its own
negligent action, its own negligent failure to act, or its own willful
misconduct, except that:

                    (i) prior to the occurrence of any Guarantee Event of
                    Default and after the curing or waiving of all such
                    Guarantee Events of Default that may have occurred:

                             (A) the duties and obligations of the Common
                             Guarantee Trustee shall be determined solely by the
                             express provisions of this Common Securities
                             Guarantee, and the Common Guarantee Trustee shall
                             not be liable except for the performance of such
                             duties and obligations as are specifically set
                             forth in this Common Securities Guarantee, and no
                             implied covenants or obligations shall be read into
                             this Common Securities Guarantee against the Common
                             Guarantee Trustee; and

                             (B) in the absence of bad faith on the part of the
                             Common Guarantee Trustee, the Common Guarantee
                             Trustee may conclusively rely, as to the truth of
                             the statements and the correctness of the opinions
                             expressed therein, upon any certificates or
                             opinions furnished to the Common Guarantee Trustee
                             and conforming to the requirements of this Common
                             Securities Guarantee; but in the case of any such
                             certificates or opinions that by any provision
                             hereof are specifically required to be furnished to
                             the Common Guarantee Trustee, the Common Guarantee
                             Trustee shall be under a duty to examine the same
                             to determine whether or not they conform to the
                             requirements of this Common Securities Guarantee;

                    (ii) the Common Guarantee Trustee shall not be liable for
                    any error of judgment made in good faith by a Responsible
                    Officer of the Common Guarantee Trustee, unless it shall be
                    proved that the Common Guarantee Trustee was negligent in
                    ascertaining the pertinent facts upon which such judgment
                    was made;

                    (iii) the Common Guarantee Trustee shall not be liable with
                    respect to any action taken or omitted to be taken by it in
                    good faith in accordance with the direction of the Holders
                    of not less than a Majority in Liquidation Amount of the
                    Common Securities relating to the time, method and place of
                    conducting any proceeding for any remedy available to the
                    Common Guarantee Trustee, or

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                    exercising any trust or power conferred upon the Common
                    Guarantee Trustee under this Common Securities Guarantee;
                    and

                    (iv) no provision of this Common Securities Guarantee shall
                    require the Common Guarantee Trustee to expend or risk its
                    own funds or otherwise incur personal financial liability in
                    the performance of any of its duties or in the exercise of
                    any of its rights or powers, if the Common Guarantee Trustee
                    shall have reasonable grounds for believing that the
                    repayment of such funds or liability is not reasonably
                    assured to it under the terms of this Common Securities
                    Guarantee or indemnify, reasonably satisfactory to the
                    Common Guarantee Trustee, against such risk or liability is
                    not reasonably assured to it.

SECTION 3.2         Certain Rights of Common Guarantee Trustee.

           (a)      Subject to the provisions of Section 3.1:

                    (i) The Common Guarantee Trustee may conclusively rely, and
                    shall be fully protected in acting or refraining from acting
                    upon, any resolution, certificate, statement, instrument,
                    opinion, report, notice, request, direction, consent, order,
                    bond, debenture, note, other evidence of indebtedness or
                    other paper or document believed by it to be genuine and to
                    have been signed, sent or presented by the proper party or
                    parties.

                    (ii) Any direction or act of the Guarantor contemplated by
                    this Common Securities Guarantee shall be sufficiently
                    evidenced by an Officers' Certificate.

                    (iii) Whenever, in the administration of this Common
                    Securities Guarantee, the Common Guarantee Trustee shall
                    deem it desirable that a matter be proved or established
                    before taking, suffering or omitting any action hereunder,
                    the Common Guarantee Trustee (unless other evidence is
                    herein specifically prescribed) may, in the absence of bad
                    faith on its part, request and conclusively rely upon an
                    Officers' Certificate which, upon receipt of such request,
                    shall be promptly delivered by the Guarantor.

                    (iv) The Common Guarantee Trustee shall have no duty to see
                    to any recording, filing or registration of any instrument
                    (or any rerecording, refiling or registration thereof).

                    (v) The Common Guarantee Trustee may consult with counsel,
                    and the written advice or opinion of such counsel with
                    respect to legal matters shall be full and complete
                    authorization and protection in respect of any action taken,
                    suffered or omitted by it hereunder in good faith and in
                    accordance with such advice or opinion. Such counsel may be
                    counsel to the Guarantor or any of its Affiliates and may
                    include any of its employees. The Common Guarantee Trustee
                    shall have the

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                    right at any time to seek instructions concerning the
                    administration of this Common Securities Guarantee from any
                    court of competent jurisdiction.

                    (vi) The Common Guarantee Trustee shall be under no
                    obligation to exercise any of the rights or powers vested in
                    it by this Common Securities Guarantee at the request or
                    direction of any Holder, unless such Holder shall have
                    provided to the Common Guarantee Trustee such security and
                    indemnity, reasonably satisfactory to the Common Guarantee
                    Trustee, against the costs, expenses (including attorneys'
                    fees and expenses and the expenses of the Common Guarantee
                    Trustee's agents, nominees or custodians) and liabilities
                    that might be incurred by it in complying with such request
                    or direction, including such reasonable advances as may be
                    requested by the Common Guarantee Trustee; provided, that
                    nothing contained in this Section 3.2(a)(vi) shall be taken
                    to relieve the Common Guarantee Trustee, upon the occurrence
                    of a Guarantee Event of Default, of its obligation to
                    exercise the rights and powers vested in it by this Common
                    Securities Guarantee.

                    (vii) The Common Guarantee Trustee shall not be bound to
                    make any investigation into the facts or matters stated in
                    any resolution, certificate, statement, instrument, opinion,
                    report, notice, request, direction, consent, order, bond,
                    debenture, note, other evidence of indebtedness or other
                    paper or document, but the Common Guarantee Trustee, in its
                    discretion, may make such further inquiry or investigation
                    into such facts or matters as it may see fit.

                    (viii) The Common Guarantee Trustee may execute any of the
                    trusts or powers hereunder or perform any duties hereunder
                    either directly or by or through agents, nominees,
                    custodians or attorneys, and the Common Guarantee Trustee
                    shall not be responsible for any misconduct or negligence on
                    the part of any agent or attorney appointed with due care by
                    it hereunder.

                    (ix) Any action taken by the Common Guarantee Trustee or its
                    agents hereunder shall bind the Holders of the Common
                    Securities, and the signature of the Common Guarantee
                    Trustee or its agents alone shall be sufficient and
                    effective to perform any such action. No third party shall
                    be required to inquire as to the authority of the Common
                    Guarantee Trustee to so act or as to its compliance with any
                    of the terms and provisions of this Common Securities
                    Guarantee, both of which shall be conclusively evidenced by
                    the Common Guarantee Trustee's or its agent's taking such
                    action.

                    (x) Whenever in the administration of this Common Securities
                    Guarantee the Common Guarantee Trustee shall deem it
                    desirable to receive instructions with respect to enforcing
                    any remedy or right or taking any other action hereunder,
                    the Common Guarantee Trustee (i) may request instructions
                    from the Holders of a Majority in Liquidation Amount of the
                    Common Securities, (ii) may refrain from enforcing such
                    remedy or right or taking such other action until such
                    instructions

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                    are received, and (iii) shall be protected in conclusively
                    relying on or acting in accordance with such instructions.

           (b) No provision of this Common Securities Guarantee shall be deemed
to impose any duty or obligation on the Common Guarantee Trustee to perform any
act or acts or exercise any right, power, duty or obligation conferred or
imposed on it in any jurisdiction in which it shall be illegal, or in which the
Common Guarantee Trustee shall be unqualified or incompetent in accordance with
applicable law, to perform any such act or acts or to exercise any such right,
power, duty or obligation. No permissive power or authority available to the
Common Guarantee Trustee shall be construed to be a duty.

SECTION 3.3 Not Responsible for Recitals or Issuance of Guarantee.

           The recitals contained in this Common Securities Guarantee shall be
taken as the statements of the Guarantor, and the Common Guarantee Trustee does
not assume any responsibility for their correctness. The Common Guarantee
Trustee makes no representation as to the validity or sufficiency of this Common
Securities Guarantee.


                                    ARTICLE 4
                            COMMON GUARANTEE TRUSTEE

SECTION 4.1         Common Guarantee Trustee; Eligibility.

          (a)       There shall be at all times be a Common Guarantee Trustee
which shall:

                    (i)      not be an Affiliate of the Guarantor; and

                    (ii) be a corporation organized and doing business under the
                    laws of the United States of America or any State or
                    Territory thereof or of the District of Columbia, or a
                    corporation or Person permitted by the Securities and
                    Exchange Commission to act as an institutional trustee under
                    the Trust Indenture Act, authorized under such laws to
                    exercise corporate trust powers, having a combined capital
                    and surplus of at least 50 million U.S. dollars
                    ($50,000,000), and subject to supervision or examination by
                    Federal, State, Territorial or District of Columbia
                    authority. If such corporation publishes reports of
                    condition at least annually, pursuant to law or to the
                    requirements of the supervising or examining authority
                    referred to above, then, for the purposes of this Section
                    4.1(a)(ii), the combined capital and surplus of such
                    corporation shall be deemed to be its combined capital and
                    surplus as set forth in its most recent report of condition
                    so published.

           (b) If at any time the Common Guarantee Trustee shall cease to be
eligible to so act under Section 4.1(a), the Common Guarantee Trustee shall
immediately resign in the manner and with the effect set out in Section 4.2(c).

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           (c) If the Common Guarantee Trustee has or shall acquire any
"conflicting interest" within the meaning of Section 310(b) of the Trust
Indenture Act, the Common Guarantee Trustee and Guarantor shall in all respects
comply with the provisions of Section 310(b) of the Trust Indenture Act.

SECTION 4.2 Appointment, Removal and Resignation of Common Guarantee Trustee.

           (a) Subject to Section 4.1(b), the Common Guarantee Trustee may be
appointed or removed without cause at any time by the Guarantor.

           (b) The Common Guarantee Trustee shall not be removed in accordance
with Section 4.2(a) until a Successor Common Guarantee Trustee has been
appointed and has accepted such appointment by written instrument executed by
such Successor Common Guarantee Trustee and delivered to the Guarantor.

           (c) The Common Guarantee Trustee appointed to office shall hold
office until a Successor Common Guarantee Trustee shall have been appointed or
until its removal or resignation. The Common Guarantee Trustee may resign from
office (without need for prior or subsequent accounting) by an instrument in
writing executed by the Common Guarantee Trustee and delivered to the Guarantor,
which resignation shall not take effect until a Successor Common Guarantee
Trustee has been appointed and has accepted such appointment by instrument in
writing executed by such Successor Common Guarantee Trustee and delivered to the
Guarantor and the resigning Common Guarantee Trustee.

           (d) If no Successor Common Guarantee Trustee shall have been
appointed and accepted appointment as provided in this Section 4.2 within 60
days after delivery to the Guarantor of an instrument of resignation, the
resigning Common Guarantee Trustee may petition any court of competent
jurisdiction for appointment of a Successor Common Guarantee Trustee. Such court
may thereupon, after prescribing such notice, if any, as it may deem proper,
appoint a Successor Common Guarantee Trustee.

           (e) No Common Guarantee Trustee shall be liable for the acts or
omissions to act of any Successor Common Guarantee Trustee.

           (f) Upon termination of this Common Securities Guarantee or removal
or resignation of the Common Guarantee Trustee pursuant to this Section 4.2, the
Guarantor shall pay to the Common Guarantee Trustee all amounts owing for fees
and reimbursement of expenses which have accrued to the date of such
termination, removal or resignation.



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                                    ARTICLE 5
                                    GUARANTEE

SECTION 5.1         Guarantee.

           The Guarantor irrevocably and unconditionally agrees to pay in full
to the Holders the Guarantee Payments (without duplication of amounts
theretofore paid by the Issuer), as and when due, regardless of any defense,
right of set-off or counterclaim that the Issuer may have or assert. The
Guarantor's obligation to make a Guarantee Payment may be satisfied by direct
payment of the required amounts by the Guarantor to the Holders or by causing
the Issuer to pay such amounts to the Holders.

SECTION 5.2         Waiver of Notice and Demand.

           The Guarantor hereby waives notice of acceptance of this Common
Securities Guarantee and of any liability to which it applies or may apply,
presentment, demand for payment, any right to require a proceeding first against
the Issuer or any other Person before proceeding against the Guarantor, protest,
notice of nonpayment, notice of dishonor, notice of redemption and all other
notices and demands. Notwithstanding anything to the contrary herein, the
Guarantor retains all of its rights under the Indenture to (i) extend the
interest payment period on the Debentures and the Guarantor shall not be
obligated hereunder to make any Guarantee Payments during any Extended Interest
Payment Period (as defined in the Indenture) with respect to the Distributions
(as defined in the Declaration) on the Common Securities, and (ii) change the
maturity date of the Debentures to the extent permitted by the Indenture.

SECTION 5.3         Obligations Not Affected.

           The obligations, covenants, agreements and duties of the Guarantor
under this Common Securities Guarantee shall be absolute and unconditional and
shall remain in full force and effect until the entire liquidation amount of all
outstanding Common Securities shall have been paid and such obligation shall in
no way be affected or impaired by reason of the happening from time to time of
any event, including without limitation, the following, whether or not with
notice to, or the consent of, the Guarantor:

           (a) The release or waiver, by operation of law or otherwise, of the
           performance or observance by the Issuer of any express or implied
           agreement, covenant, term or condition relating to the Common
           Securities to be performed or observed by the Issuer;

           (b) The extension of time for the payment by the Issuer of all or any
           portion of the Distributions, Redemption Price, Liquidation
           Distribution or any other sums payable under the terms of the Common
           Securities or the extension of time for the performance of any other
           obligation under, arising out of, or in connection with the Common
           Securities (other than an extension of time for payment of
           Distributions, Redemption Price, Liquidation Distribution or other
           sum payable that results from the extension of any interest payment

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           period on the Debentures or any change to the maturity date of the
           Debentures permitted by the Indenture);

           (c) Any failure, omission, delay or lack of diligence on the part of
           the Property Trustee or the Holders to enforce, assert or exercise
           any right, privilege, power or remedy conferred on the Property
           Trustee or the Holders pursuant to the terms of the Common
           Securities, or any action on the part of the Issuer granting
           indulgence or extension of any kind;

           (d) The voluntary or involuntary liquidation, dissolution, sale of
           any collateral, receivership, insolvency, bankruptcy, assignment for
           the benefit of creditors, reorganization, arrangement, composition or
           readjustment of debt of, or other similar proceedings affecting, the
           Issuer or any of the assets of the Issuer;

           (e) Any invalidity of, or defect or deficiency in, the Common
           Securities;

           (f) The settlement or compromise of any obligation guaranteed hereby
           or hereby incurred; or

           (g) Any other circumstance whatsoever that might otherwise constitute
           a legal or equitable discharge or defense of a guarantor, it being
           the intent of this Section 5.3 that the obligations of the Guarantor
           hereunder shall be absolute and unconditional under any and all
           circumstances.

           There shall be no obligation of the Common Guarantee Trustee or the
Holders to give notice to, or obtain consent of the Guarantor or any other
Person with respect to the happening of any of the foregoing.

           No setoff, counterclaim, reduction or diminution of any obligation,
or any defense of any kind or nature that the Guarantor has or may have against
any Holder shall be available hereunder to the Guarantor against such Holder to
reduce the payments to it under this Common Securities Guarantee.

SECTION 5.4         Rights of Holders.

           (a) The Holders of a Majority in Liquidation Amount of the Common
Securities have the right to direct the time, method and place of conducting any
proceeding for any remedy available to the Common Guarantee Trustee in respect
of this Common Securities Guarantee or exercising any trust or power conferred
upon the Common Guarantee Trustee under this Common Securities Guarantee.

           (b) If the Common Guarantee Trustee fails to enforce this Common
Securities Guarantee, then any Holder of Common Securities may, subject to the
subordination provisions of Section 6.2, institute a legal proceeding directly
against the Guarantor to enforce the Common

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Guarantee Trustee's rights under this Common Securities Guarantee without first
instituting a legal proceeding against the Issuer, the Common Guarantee Trustee
or any other person or entity. Notwithstanding the foregoing, if the Guarantor
has failed to make a Guarantee Payment, a Holder of Common Securities may,
subject to the subordination provisions of Section 6.2, directly institute a
proceeding against the Guarantor for enforcement of the Common Securities
Guarantee for such payment to the Holder of the Common Securities of the
principal of or interest on the Debentures on or after the respective due dates
specified in the Debentures, and the amount of the payment will be based on the
Holder's pro rata share of the amount due and owing on all of the Common
Securities. The Guarantor hereby waives any right or remedy to require that any
action on this Common Securities Guarantee be brought first against the Issuer
or any other person or entity before proceeding directly against the Guarantor.

SECTION 5.5         Guarantee of Payment.

           This Common Securities Guarantee creates a guarantee of payment and
not of collection.

SECTION 5.6         Subrogation.

           The Guarantor shall be subrogated to all (if any) rights of the
Holders of Common Securities against the Issuer in respect of any amounts paid
to such Holders by the Guarantor under this Common Securities Guarantee;
provided, however, that the Guarantor shall not (except to the extent required
by mandatory provisions of law) be entitled to enforce or exercise any right
that it may acquire by way of subrogation or any indemnity, reimbursement or
other agreement, in all cases as a result of payment under this Common
Securities Guarantee, if at the time of any such payment, any amounts are due
and unpaid under this Common Securities Guarantee. If any amount shall be paid
to the Guarantor in violation of the preceding sentence, the Guarantor agrees to
hold such amount in trust for the Holders and to pay over such amount to the
Common Guarantee Trustee for the benefit of the Holders.

SECTION 5.7         Independent Obligations.

           The Guarantor acknowledges that its obligations hereunder are
independent of the obligations of the Issuer with respect to the Common
Securities, and that the Guarantor shall be liable as principal and as debtor
hereunder to make Guarantee Payments pursuant to the terms of this Common
Securities Guarantee notwithstanding the occurrence of any event referred to in
subsections 5.3(a) through 5.3(g), inclusive, hereof.



                                       15

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                                    ARTICLE 6
                    LIMITATION OF TRANSACTIONS; SUBORDINATION

SECTION 6.1         Limitation of Transactions.

           So long as any Common Securities remain outstanding, if there shall
have occurred a Guarantee Event of Default or an event of default under the
Declaration, then (a) the Guarantor shall not declare or pay any dividend on,
make any distributions with respect to, or redeem, purchase, acquire or make a
liquidation payment with respect to, any of its capital stock, (b) the Guarantor
shall not make any payment of interest, principal or premium, if any, on or
repay, repurchase or redeem any debt securities (including guarantees) issued by
the Guarantor which rank pari passu with or junior to the Debentures and (c) the
Guarantor shall not make any guarantee payments with respect to the foregoing
(other than pursuant to this Common Securities Guarantee); provided, however,
the Guarantor may declare and pay a stock dividend where the dividend stock is
the same stock as that on which the dividend is being paid.

SECTION 6.2         Ranking.

           This Common Securities Guarantee will constitute an unsecured
obligation of the Guarantor and will rank (i) subordinate and junior in right of
payment to all other liabilities of the Guarantor, except those liabilities of
the Guarantor made pari passu or subordinate by their terms, (ii) pari passu
with the most senior preferred or preference stock now or hereafter issued by
the Guarantor and with any guarantee now or hereafter entered into by the
Guarantor in respect of any preferred or preference stock of any Affiliate of
the Guarantor, and (iii) senior to the Guarantor's common stock.

           If an Event of Default has occurred and is continuing under the
Declaration, the rights of the Holders of the Common Securities to receive
Guarantee Payments under this Common Securities Guarantee shall be subordinated
to the rights of the holders of the Preferred Securities to receive payment of
all amounts due and owing under the terms of the Preferred Securities Guarantee.


                                    ARTICLE 7
                                   TERMINATION

SECTION 7.1         Termination.

           This Common Securities Guarantee shall terminate upon (i) full
payment of the Redemption Price of all Common Securities, (ii) upon the
distribution of the Debentures to the Holders of all of the Common Securities or
(iii) upon full payment of the amounts payable in accordance with the
Declaration upon liquidation of the Issuer. Notwithstanding the foregoing, this
Common Securities Guarantee will continue to be effective or will be reinstated,
as the case may be, if at any time any Holder of Common Securities must restore
payment of any sums paid under the Common Securities or under this Common
Securities Guarantee.

                                       16

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                                    ARTICLE 8
                                 INDEMNIFICATION

SECTION 8.1         Exculpation.

           (a) No Indemnified Person shall be liable, responsible or accountable
in damages or otherwise to the Guarantor or any Covered Person for any loss,
damage or claim incurred by reason of any act or omission performed or omitted
by such Indemnified Person in good faith in accordance with this Common
Securities Guarantee and in a manner that such Indemnified Person reasonably
believed to be within the scope of the authority conferred on such Indemnified
Person by this Common Securities Guarantee or by law, except that an Indemnified
Person shall be liable for any such loss, damage or claim incurred by reason of
such Indemnified Person's negligence or willful misconduct with respect to such
acts or omissions.

           (b) An Indemnified Person shall be fully protected in relying in good
faith upon the records of the Guarantor and upon such information, opinions,
reports or statements presented to the Guarantor by any Person as to matters the
Indemnified Person reasonably believes are within such other Person's
professional or expert competence and who has been selected with reasonable care
by or on behalf of the Guarantor, including information, opinions, reports or
statements as to the value and amount of the assets, liabilities, profits,
losses, or any other facts pertinent to the existence and amount of assets from
which Distributions to Holders of Common Securities might properly be paid.

SECTION 8.2         Indemnification.

           The Guarantor agrees to indemnify each Indemnified Person for, and to
hold each Indemnified Person harmless against any loss, liability or expense
incurred without negligence or bad faith on its part, arising out of or in
connection with the acceptance or administration of the trust or trusts
hereunder, including the costs and expenses (including reasonable legal fees and
expenses) of defending itself against, or investigating, any claim or liability
in connection with the exercise or performance of any of its powers or duties
hereunder. The obligation to indemnify as set forth in this Section 8.2 shall
survive the termination of this Common Securities Guarantee.


                                    ARTICLE 9
                                  MISCELLANEOUS

SECTION 9.1         Successors and Assigns.

           All guarantees and agreements contained in this Common Securities
Guarantee shall bind the successors, assigns, receivers, trustees and
representatives of the Guarantor and shall inure to the benefit of the Holders
of the Common Securities then outstanding.


                                       17

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SECTION 9.2         Amendments.

           Except with respect to any changes that do not adversely affect the
rights of the Holders (in which case no consent of the Holders will be
required), this Common Securities Guarantee may only be amended with the prior
approval of the Holders of at least a Majority in Liquidation Amount of the
Common Securities. The provisions of Section 12.2 of the Declaration with
respect to meetings of, and action by written consent of the Holders of the
Common Securities apply to the giving of such approval.

SECTION 9.3         Notices.

           All notices provided for in this Common Securities Guarantee shall be
in writing, duly signed by the party giving such notice, and shall be delivered,
telecopied or mailed by registered or certified mail, as follows:

           (a) If given to the Common Guarantee Trustee, at the Common Guarantee
           Trustee's mailing address set forth below (or such other address as
           the Common Guarantee Trustee may give notice of to the Guarantor and
           the Holders of the Common Securities):

               ___________________
               ___________________
               ___________________
               ___________________
               ___________________


           (b) If given to the Guarantor, at the Guarantor's mailing addresses
           set forth below (or such other address as the Guarantor may give
           notice of to the Common Guarantee Trustee and the Holders of the
           Common Securities):

               American Financial Group, Inc.
               One East Fourth Street
               Cincinnati, Ohio  45202
               Attn:    Secretary
               Telecopy No. (513) 579-2113

           (c) If given to any Holder of Common Securities, at the address set
           forth on the books and records of the Issuer.

           All such notices shall be deemed to have been given when received in
person, telecopied with receipt confirmed, or mailed by first class mail,
postage prepaid, except that if a notice or other document is refused delivery
or cannot be delivered because of a changed address of which no notice was
given, such notice or other document shall be deemed to have been delivered on
the date of such refusal or inability to deliver.


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SECTION 9.4         Benefit.

           This Common Securities Guarantee is solely for the benefit of the
Holders of the Common Securities and, subject to Section 3.1(a), is not
separately transferable from the Common Securities.

SECTION 9.5         Governing Law.

           THIS COMMON SECURITIES GUARANTEE SHALL BE GOVERNED BY, AND
CONSTRUED AND INTERPRETED IN ACCORDANCE WITH, THE LAWS OF THE STATE
OF OHIO.

           IN WITNESS WHEREOF, this Common Securities Guarantee is executed as
of the day and year first above written.

                                     AMERICAN FINANCIAL GROUP, INC.,
                                     as Guarantor



                                     By:______________________________

                                     Name:____________________________
                                     Title:___________________________


                                     ________________________________,
                                     as Common Guarantee Trustee



                                     By:______________________________

                                     Name:____________________________
                                     Title:___________________________




                                       19

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- --------------------------------------------------------------------------------


                      COMMON SECURITIES GUARANTEE AGREEMENT

                       AMERICAN FINANCIAL CAPITAL TRUST I

                         Dated as of September __, 1996

- --------------------------------------------------------------------------------

                                       

   21



                             CROSS REFERENCE TABLE*



Section of Trust                                   Section of
Indenture Act of                                    Guarantee
1939, as amended                                    Agreement

310(a).............................................4.1(a)
310(b).............................................4.1(c)
310(c).......................................Inapplicable
311(a).............................................2.2(b)
311(b).............................................2.2(b)
311(c).......................................Inapplicable
312(a).............................................2.2(a)
312(b).............................................2.2(b)
312(c)................................................2.9
313(a)................................................2.3
313(b)................................................2.3
313(c)................................................2.3
313(d)................................................2.3
314(a)................................................2.4
314(b).......................................Inapplicable
314(c)................................................2.5
314(d).......................................Inapplicable
314(e)................................................2.5
314(f).......................................Inapplicable
315(a).....................................3.1(d); 3.2(a)
315(b).............................................2.7(a)
315(c).............................................3.1(c)
315(d).............................................3.1(d)
316(a)........................................2.6; 5.4(a)
317(a)..........................................2.10; 5.4
318(a).............................................2.1(b)




- ------------------------------------

*          This Cross-Reference Table does not constitute part of the Guarantee
           Agreement and shall not have any bearing upon the interpretation of
           any of its terms or provisions.

                                      

   22



                                TABLE OF CONTENTS




                                                                                                               Page
                                                                                                               ----

                                                                                                             
ARTICLE 1           INTERPRETATION AND DEFINITIONS................................................................1
           SECTION 1.1         Interpretation and Definitions.....................................................1

ARTICLE 2           TRUST INDENTURE ACT...........................................................................5
           SECTION 2.1         Trust Indenture Act; Application...................................................5
           SECTION 2.2         Lists of Holders of Securities.....................................................5
           SECTION 2.3         Reports by Common Guarantee Trustee................................................5
           SECTION 2.4         Periodic Reports to Common Guarantee Trustee.......................................5
           SECTION 2.5         Evidence of Compliance with Conditions Precedent...................................6
           SECTION 2.6         Guarantee Event of Default; Waiver.................................................6
           SECTION 2.7         Guarantee Event of Default; Notice.................................................6
           SECTION 2.8         Conflicting Interests..............................................................6
           SECTION 2.9         Disclosure of Information..........................................................7
           SECTION 2.10        Common Guarantee Trustee May File Proofs of Claim..................................7

ARTICLE 3           POWERS, DUTIES AND RIGHTS OF
                    COMMON GUARANTEE TRUSTEE......................................................................7
           SECTION 3.1         Powers and Duties of Common Guarantee Trustee......................................7
           SECTION 3.2         Certain Rights of Common Guarantee Trustee.........................................9
           SECTION 3.3         Not Responsible for Recitals or Issuance of Guarantee.............................11

ARTICLE 4           COMMON GUARANTEE TRUSTEE.....................................................................11
           SECTION 4.1         Common Guarantee Trustee; Eligibility.............................................11
           SECTION 4.2         Appointment, Removal and Resignation of Common Guarantee Trustee..................12

ARTICLE 5           GUARANTEE....................................................................................13
           SECTION 5.1         Guarantee.........................................................................13
           SECTION 5.2         Waiver of Notice and Demand.......................................................13
           SECTION 5.3         Obligations Not Affected..........................................................13
           SECTION 5.4         Rights of Holders.................................................................14
           SECTION 5.5         Guarantee of Payment..............................................................15
           SECTION 5.6         Subrogation.......................................................................15
           SECTION 5.7         Independent Obligations...........................................................15

ARTICLE 6           LIMITATION OF TRANSACTIONS; SUBORDINATION....................................................16
           SECTION 6.1         Limitation of Transactions........................................................16
           SECTION 6.2         Ranking...........................................................................16



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ARTICLE 7           TERMINATION..................................................................................16
           SECTION 7.1         Termination.......................................................................16

ARTICLE 8           INDEMNIFICATION..............................................................................17
           SECTION 8.1         Exculpation.......................................................................17
           SECTION 8.2         Indemnification...................................................................17

ARTICLE 9           MISCELLANEOUS................................................................................17
           SECTION 9.1         Successors and Assigns............................................................17
           SECTION 9.2         Amendments........................................................................18
           SECTION 9.3         Notices...........................................................................18
           SECTION 9.4         Benefit...........................................................................19
           SECTION 9.5         Governing Law.....................................................................19





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