EXHIBIT 10.06
                          CAPITAL SECURITY CERTIFICATE

                               [FACE OF SECURITY]

         THIS SECURITY HAS NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933,
AS  AMENDED  (THE  "SECURITIES  ACT"),  ANY STATE  SECURITIES  LAWS OR ANY OTHER
APPLICABLE   SECURITIES   LAW.   NEITHER  THIS  SECURITY  NOR  ANY  INTEREST  OR
PARTICIPATION  HEREIN MAY BE REOFFERED,  SOLD, ASSIGNED,  TRANSFERRED,  PLEDGED,
ENCUMBERED  OR  OTHERWISE  DISPOSED  OF IN THE ABSENCE OF SUCH  REGISTRATION  OR
UNLESS SUCH  TRANSACTION  IS EXEMPT  FROM,  OR NOT SUBJECT TO, THE  REGISTRATION
REQUIREMENTS OF THE SECURITIES ACT AND ANY APPLICABLE STATE SECURITIES LAWS. THE
HOLDER OF THIS  SECURITY  BY ITS  ACCEPTANCE  HEREOF  AGREES  TO OFFER,  SELL OR
OTHERWISE  TRANSFER  THIS  SECURITY  ONLY (A) TO THE  SPONSOR OR THE TRUST,  (B)
PURSUANT TO A REGISTRATION  STATEMENT THAT HAS BEEN DECLARED EFFECTIVE UNDER THE
SECURITIES  ACT,  (C) TO A  PERSON  WHOM THE  SELLER  REASONABLY  BELIEVES  IS A
QUALIFIED  INSTITUTIONAL BUYER IN A TRANSACTION MEETING THE REQUIREMENTS OF RULE
144A SO LONG AS THIS  SECURITY IS ELIGIBLE  FOR RESALE  PURSUANT TO RULE 144A IN
ACCORDANCE WITH RULE 144A, (D) TO A NON-U.S.  PERSON IN AN OFFSHORE  TRANSACTION
IN ACCORDANCE  WITH RULE 903 OR RULE 904 (AS  APPLICABLE)  OF REGULATION S UNDER
THE SECURITIES ACT, (E) TO AN  INSTITUTIONAL  "ACCREDITED  INVESTOR"  WITHIN THE
MEANING  OF  SUBPARAGRAPH  (A) OF RULE  501  UNDER  THE  SECURITIES  ACT THAT IS
ACQUIRING THIS CAPITAL SECURITY FOR ITS OWN ACCOUNT,  OR FOR THE ACCOUNT OF SUCH
AN INSTITUTIONAL  ACCREDITED  INVESTOR,  FOR INVESTMENT  PURPOSES AND NOT WITH A
VIEW TO, OR FOR OFFER OR SALE IN CONNECTION  WITH, ANY DISTRIBUTION IN VIOLATION
OF THE SECURITIES ACT, OR (F) PURSUANT TO ANY OTHER AVAILABLE EXEMPTION FROM THE
REGISTRATION  REQUIREMENTS OF THE SECURITIES  ACT,  SUBJECT TO THE SPONSOR'S AND
THE  TRUST'S  RIGHT  PRIOR TO ANY SUCH  OFFER,  SALE OR  TRANSFER TO REQUIRE THE
DELIVERY  OF AN OPINION  OF  COUNSEL,  CERTIFICATION  AND/OR  OTHER  INFORMATION
SATISFACTORY  TO EACH  OF  THEM IN  ACCORDANCE  WITH  THE  DECLARATION  (DEFINED
HEREIN), A COPY OF WHICH MAY BE OBTAINED FROM THE SPONSOR OR THE TRUST.  HEDGING
TRANSACTIONS  INVOLVING THIS SECURITY MAY NOT BE CONDUCTED  UNLESS IN COMPLIANCE
WITH THE SECURITIES ACT.

         THE HOLDER OF THIS  SECURITY  BY ITS  ACCEPTANCE  HEREOF  ALSO  AGREES,
REPRESENTS  AND  WARRANTS  THAT  IT  IS  NOT  AN  EMPLOYEE  BENEFIT,  INDIVIDUAL
RETIREMENT  ACCOUNT  OR  OTHER  PLAN OR  ARRANGEMENT  SUBJECT  TO TITLE I OF THE
EMPLOYEE  RETIREMENT  INCOME  SECURITY  ACT OF 1974,  AS AMENDED  ("ERISA"),  OR
SECTION 4975 OF THE INTERNAL REVENUE CODE OF 1986, AS AMENDED (THE "CODE") (EACH
A "PLAN"),  OR AN ENTITY WHOSE UNDERLYING ASSETS INCLUDE "PLAN ASSETS" BY REASON
OF ANY PLAN'S INVESTMENT IN THE ENTITY, AND NO PERSON INVESTING "PLAN ASSETS" OF
ANY PLAN MAY ACQUIRE OR HOLD THE SECURITIES OR ANY INTEREST THEREIN, UNLESS SUCH





PURCHASER  OR HOLDER IS  ELIGIBLE  FOR  EXEMPTIVE  RELIEF  AVAILABLE  UNDER U.S.
DEPARTMENT OF LABOR PROHIBITED  TRANSACTION CLASS EXEMPTION 96-23, 95-60, 91-38,
90-1 OR 84-14 OR ANOTHER  APPLICABLE  EXEMPTION  OR ITS  PURCHASE AND HOLDING OF
THIS  SECURITY IS NOT  PROHIBITED BY SECTION 406 OF ERISA OR SECTION 4975 OF THE
CODE WITH RESPECT TO SUCH  PURCHASE OR HOLDING.  ANY  PURCHASER OR HOLDER OF THE
SECURITIES  OR ANY INTEREST  THEREIN WILL BE DEEMED TO HAVE  REPRESENTED  BY ITS
PURCHASE AND HOLDING THEREOF THAT EITHER (i) IT IS NOT AN EMPLOYEE  BENEFIT PLAN
WITHIN THE MEANING OF SECTION 3(3) OF ERISA,  OR A PLAN TO WHICH SECTION 4975 OF
THE CODE IS  APPLICABLE,  A  TRUSTEE  OR OTHER  PERSON  ACTING  ON  BEHALF OF AN
EMPLOYEE BENEFIT PLAN OR PLAN, OR ANY OTHER PERSON OR ENTITY USING THE ASSETS OF
ANY  EMPLOYEE  BENEFIT  PLAN OR PLAN TO  FINANCE  SUCH  PURCHASE,  OR (ii)  SUCH
PURCHASE WILL NOT RESULT IN A PROHIBITED  TRANSACTION UNDER SECTION 406 OF ERISA
OR  SECTION  4975 OF THE CODE FOR  WHICH  THERE IS NO  APPLICABLE  STATUTORY  OR
ADMINISTRATIVE EXEMPTION.

         THIS  SECURITY  WILL BE ISSUED  AND MAY BE  TRANSFERRED  ONLY IN BLOCKS
HAVING A LIQUIDATION  AMOUNT OF NOT LESS THAN  $100,000.00  (100 SECURITIES) AND
MULTIPLES OF $1,000.00 IN EXCESS THEREOF.  ANY ATTEMPTED  TRANSFER OF SECURITIES
IN A BLOCK HAVING A LIQUIDATION  AMOUNT OF LESS THAN $100,000.00 SHALL BE DEEMED
TO BE VOID AND OF NO LEGAL EFFECT WHATSOEVER.

         THE  HOLDER  OF THIS  SECURITY  AGREES  THAT IT WILL  COMPLY  WITH  THE
FOREGOING RESTRICTIONS.

         THIS  SECURITY  IS IN  REGISTERED  FORM  WITHIN THE MEANING OF TREASURY
REGULATIONS  SECTION  1.871-14(c)(1)(i)  FOR U.S. FEDERAL INCOME AND WITHHOLDING
TAX PURPOSES.

         IN  CONNECTION  WITH ANY  TRANSFER,  THE  HOLDER  WILL  DELIVER  TO THE
REGISTRAR AND TRANSFER AGENT SUCH  CERTIFICATES AND OTHER  INFORMATION AS MAY BE
REQUIRED BY THE  DECLARATION  TO CONFIRM  THAT THE  TRANSFER  COMPLIES  WITH THE
FOREGOING RESTRICTIONS.







                Certificate Number P-1       13,000 Capital Securities

                                December 15, 2004

          CERTIFICATE EVIDENCING FIXED/FLOATING RATE CAPITAL SECURITIES

                                       OF

                         TOWER GROUP STATUTORY TRUST III

               (liquidation amount $1,000.00 per Capital Security)

         Tower Group  Statutory  Trust III, a statutory  trust created under the
laws of the State of Delaware (the  "Trust"),  hereby  certifies that Hare & Co.
(the "Holder"),  as the nominee of The Bank of New York, indenture trustee under
the Indenture  dated as of December 15, 2004,  among  Preferred Term  Securities
XVI, Ltd.,  Preferred Term Securities XVI, Inc. and The Bank of New York, is the
registered  owner of  capital  securities  of the Trust  representing  undivided
beneficial  interests in the assets of the Trust,  (liquidation amount $1,000.00
per capital security) (the "Capital Securities"). Subject to the Declaration (as
defined below), the Capital Securities are transferable on the books and records
of the Trust in person or by a duly authorized attorney,  upon surrender of this
Certificate  duly  endorsed  and  in  proper  form  for  transfer.  The  Capital
Securities  represented  hereby are  issued  pursuant  to, and the  designation,
rights, privileges, restrictions,  preferences and other terms and provisions of
the Capital  Securities  shall in all respects be subject to, the  provisions of
the Amended and Restated  Declaration of Trust of the Trust dated as of December
15, 2004,  among Michael H. Lee,  Francis M.  Colalucci and Steven G. Fauth,  as
Administrators,  Wilmington Trust Company, as Delaware Trustee, Wilmington Trust
Company,  as  Institutional  Trustee,  Tower Group,  Inc.,  as Sponsor,  and the
holders from time to time of undivided beneficial interests in the assets of the
Trust,  including the designation of the terms of the Capital  Securities as set
forth in Annex I to such  amended and  restated  declaration  as the same may be
amended from time to time (the "Declaration"). Capitalized terms used herein but
not defined shall have the meaning given them in the Declaration.  The Holder is
entitled  to the  benefits  of the  Guarantee  and the  Indenture  to the extent
provided  therein.  The  Sponsor  will  provide a copy of the  Declaration,  the
Guarantee,  and the Indenture to the Holder without charge upon written  request
to the Sponsor at its principal place of business.

         Upon receipt of this Security,  the Holder is bound by the  Declaration
and is entitled to the benefits thereunder.

         By acceptance of this Security,  the Holder agrees to treat, for United
States  federal  income tax purposes,  the  Debentures as  indebtedness  and the
Capital Securities as evidence of beneficial ownership in the Debentures.

         This  Capital  Security  is  governed  by,  and shall be  construed  in
accordance with, the laws of the State of Delaware, without regard to principles
of conflict of laws.

                       SIGNATURES APPEAR ON FOLLOWING PAGE







         IN WITNESS WHEREOF, the Trust has duly executed this certificate.

                                         Tower Group STATUTORY TRUST III



                                         By:   /s/  Francis M. Colalucci
                                            --------------------------------
                                              Name:   Francis M. Colalucci
                                              Title:  Administrator


                          CERTIFICATE OF AUTHENTICATION

         This   is  one  of  the   Capital   Securities   referred   to  in  the
within-mentioned Declaration.


                                         WILMINGTON TRUST COMPANY,
                                         as the Institutional Trustee


                                         By:  /s/  C. Slaybaugh
                                            --------------------------------
                                                Authorized Officer







                          [REVERSE OF CAPITAL SECURITY]

         Distributions  payable on each Capital  Security  will be payable at an
annual rate equal to 7.40%  beginning  on (and  including)  the date of original
issuance and ending on (but  excluding) the  Distribution  Payment Date (defined
herein)  in  December  2009 and at an  annual  rate for each  successive  period
beginning on (and  including)  December 2009, and each  succeeding  Distribution
Payment Date,  commencing on the  Distribution  Payment Date in March 2005,  and
ending on (but  excluding) the next succeeding  Distribution  Payment Date (each
such period,  a "Distribution  Period"),  equal to 3-Month LIBOR,  determined as
described  below,  plus  3.40%  (the  "Coupon  Rate"),  applied  to  the  stated
liquidation  amount of $1,000.00 per Capital Security,  such rate being the rate
of interest payable on the Debentures to be held by the  Institutional  Trustee.
Distributions in arrears will bear interest thereon compounded  quarterly at the
Distribution  Rate  (to the  extent  permitted  by  applicable  law).  The  term
"Distributions"  as used herein includes payments of cash  distributions and any
such compounded  distributions and any Additional Sums payable on the Debentures
unless  otherwise  noted.  A  Distribution  is payable  only to the extent  that
payments are made in respect of the Debentures held by the Institutional Trustee
and to the extent the  Institutional  Trustee has funds available  therefor.  As
used herein, "Determination Date" means the date that is two London Banking Days
(i.e.,  a  business  day in which  dealings  in  deposits  in U.S.  dollars  are
transacted in the London  interbank  market)  preceding the  commencement of the
relevant Distribution Period. The amount of the Distribution payable (i) for any
Distribution  Period  commencing  on or after the date of original  issuance but
before the  Distribution  Payment Date in December  2009 will be computed on the
basis of a 360-day year of twelve 30-day months,  and (ii) for the  Distribution
Period commencing on or after the Distribution Payment Date in December 2009 and
each succeeding Distribution Period will be computed on the Distribution Rate to
the  stated   liquidation   amount   outstanding  at  the  commencement  of  the
Distribution  Period and  multiplying  each such amount by the actual  number of
days in the Distribution Period concerned divided by 360.

         "3-Month  LIBOR" as used  herein,  means the London  interbank  offered
interest rate for three-month  U.S. dollar deposits  determined by the Debenture
Trustee  in the  following  order  of  priority:  (i) the rate  (expressed  as a
percentage per annum) for U.S.  dollar  deposits  having a three-month  maturity
that appears on Telerate Page 3750 as of 11:00 a.m. (London time) on the related
Determination  Date ("Telerate Page 3750" means the display  designated as "Page
3750" on the Dow Jones  Telerate  Service or such other page as may replace Page
3750 on that  service or such other  service or services as may be  nominated by
the British  Bankers'  Association as the information  vendor for the purpose of
displaying  London interbank  offered rates for U.S. dollar  deposits);  (ii) if
such rate cannot be identified on the related  Determination Date, the Debenture
Trustee will request the principal  London  offices of four leading banks in the
London interbank market to provide such banks' offered quotations  (expressed as
percentages  per annum) to prime banks in the London  interbank  market for U.S.
dollar deposits having a three-month  maturity as of 11:00 a.m. (London time) on
such Determination  Date. If at least two such quotations are provided,  3-Month
LIBOR will be the arithmetic  mean of such  quotations;  (iii) if fewer than two
such  quotations  are provided as requested in clause (ii) above,  the Debenture
Trustee  will  request  four major New York City banks to  provide  such  banks'
offered  quotations  (expressed as  percentages  per annum) to leading  European
banks  for  loans  in U.S.  dollars  as of  11:00  a.m.  (London  time)  on such
Determination Date. If at least two such quotations are provided,  3-Month LIBOR
will be the arithmetic mean of such quotations;  and (iv) if fewer than two such
quotations  are provided as requested in clause (iii) above,  3-Month LIBOR will
be  a  3-Month  LIBOR  determined  with  respect  to  the  Distribution   Period
immediately  preceding such current  Distribution  Period.  If the rate for U.S.
dollar deposits having a three-month maturity that initially appears on Telerate
Page 3750 as of 11:00 a.m.  (London time) on the related  Determination  Date is
superseded on the Telerate  Page 3750 by a corrected  rate by 12:00 noon (London
time) on such  Determination  Date, then the corrected rate as so substituted on
the applicable page will be the applicable  3-Month LIBOR for such Determination
Date.


         "Interest  Rate" means for the period  beginning on (and including) the
date of original issuance and ending on (but excluding) the Distribution Payment
Date in  December  2009 the rate per  annum of 7.40%  and for each  Distribution
Period thereafter, the Coupon Rate.

         The Interest Rate for any Distribution Period will at no time be higher
than the maximum rate then permitted by New York law as the same may be modified
by United States law.

         All  percentages   resulting  from  any  calculations  on  the  Capital
Securities will be rounded, if necessary,  to the nearest one hundred-thousandth
of a percentage  point,  with five  one-millionths of a percentage point rounded
upward (e.g.,  9.876545% (or .09876545) being rounded to 9.87655% (or .0987655),
and all  dollar  amounts  used in or  resulting  from such  calculation  will be
rounded to the nearest cent (with one-half cent being rounded upward)).

         Except as  otherwise  described  below,  Distributions  on the  Capital
Securities  will be cumulative,  will accrue from the date of original  issuance
and will be payable  quarterly in arrears on March 15, June 15, September 15 and
December  15 of each year or if such day is not a  Business  Day,  then the next
succeeding  Business  Day (each  such  date,  a  "Distribution  Payment  Date"),
commencing on the Distribution  Payment Date in March 2005. The Debenture Issuer
has the  right  under  the  Indenture  to  defer  payments  of  interest  on the
Debentures,  so long as no  Indenture  Event  of  Default  has  occurred  and is
continuing,  by extending the interest  payment  period for up to 20 consecutive
quarterly periods (each an "Extension Period") at any time and from time to time
on the  Debentures,  subject to the  conditions  described  below,  during which
Extension  Period no interest  shall be due and  payable.  During any  Extension
Period, interest will continue to accrue on the Debentures, and interest on such
accrued interest will accrue at an annual rate equal to the Distribution Rate in
effect for each such Extension Period,  compounded  quarterly from the date such
interest  would have been payable were it not for the Extension  Period,  to the
extent  permitted  by law (such  interest  referred  to  herein  as  "Additional
Interest").  No  Extension  Period may end on a date  other than a  Distribution
Payment Date. At the end of any such Extension Period the Debenture Issuer shall
pay all  interest  then  accrued  and unpaid on the  Debentures  (together  with
Additional Interest thereon);  PROVIDED,  HOWEVER,  that no Extension Period may
extend  beyond the Maturity  Date.  Prior to the  termination  of any  Extension
Period, the Debenture Issuer may further extend such period,  provided that such
period  together  with all such  previous  and  further  consecutive  extensions
thereof shall not exceed 20 consecutive  quarterly periods, or extend beyond the
Maturity Date. Upon the termination of any Extension Period and upon the payment
of all accrued and unpaid interest and Additional Interest, the Debenture Issuer
may commence a new Extension Period, subject to the foregoing  requirements.  No
interest or  Additional  Interest  shall be due and payable  during an Extension
Period,  except at the end thereof,  but each installment of interest that would
otherwise  have been due and payable  during such  Extension  Period  shall bear
Additional Interest.  During any Extension Period,  Distributions on the Capital
Securities  shall be deferred for a period  equal to the  Extension  Period.  If



Distributions are deferred, the Distributions due shall be paid on the date that
the related  Extension Period  terminates,  to Holders of the Securities as they
appear on the books and  records  of the Trust on the  record  date  immediately
preceding such date.  Distributions  on the Securities must be paid on the dates
payable  (after giving  effect to any  Extension  Period) to the extent that the
Trust has funds available for the payment of such  distributions in the Property
Account of the Trust.  The  Trust's  funds  available  for  Distribution  to the
Holders  of the  Securities  will be  limited  to  payments  received  from  the
Debenture  Issuer.  The payment of Distributions out of moneys held by the Trust
is guaranteed by the Guarantor pursuant to the Guarantee.

         The  Capital   Securities  shall  be  redeemable  as  provided  in  the
Declaration.







                                   ASSIGNMENT

         FOR VALUE RECEIVED,  the undersigned assigns and transfers this Capital
Security Certificate to:

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         (Insert assignee's social security or tax identification number)

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         (Insert address and zip code of assignee) and irrevocably appoints

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         agent to transfer this Capital Security Certificate on the books of the
Trust. The agent may substitute another to act for him or her.

         Date:
              ---------------------------------------

         Signature:
                   ----------------------------------

         (Sign  exactly as your name  appears on the other side of this  Capital
Security Certificate)

Signature Guarantee:(1)

- --------
(1)      Signature  must be  guaranteed by an "eligible  guarantor  institution"
         that is a bank,  stockbroker,  savings and loan  association  or credit
         union  meeting  the  requirements  of  the  Security  registrar,  which
         requirements  include  membership or  participation  in the  Securities
         Transfer Agents  Medallion  Program  ("STAMP") or such other "signature
         guarantee  program" as may be determined  by the Security  registrar in
         addition to, or in substitution  for, STAMP, all in accordance with the
         Securities Exchange Act of 1934, as amended.