Exhibit 4-W

                         (FORM OF FACE OF SECURITY)
                        JUNIOR SUBORDINATED DEBENTURE

REGISTERED                                                 REGISTERED        
NO.                                                        (PRINCIPAL AMOUNT)
                                                           CUSIP:            

     UNLESS THIS CERTIFICATE IS PRESENTED BY  AN AUTHORIZED REPRESENTATIVE OF
THE DEPOSITORY  TRUST COMPANY (55  WATER STREET, NEW  YORK, NEW YORK)  TO THE
ISSUER  OR ITS AGENT  FOR REGISTRATION OF TRANSFER,  EXCHANGE OR PAYMENT, AND
ANY CERTIFICATE ISSUED IS REGISTERED IN THE NAME OF CEDE & CO. OR SUCH  OTHER
NAME AS  REQUESTED BY  AN AUTHORIZED REPRESENTATIVE  OF THE  DEPOSITORY TRUST
COMPANY AND ANY PAYMENT IS MADE TO CEDE  & CO., ANY TRANSFER, PLEDGE OR OTHER
USE HEREOF  FOR VALUE OR OTHERWISE BY OR TO  ANY PERSON IS WRONGFUL SINCE THE
REGISTERED OWNER HEREOF, CEDE & CO., HAS AN INTEREST HEREIN.

     UNLESS AND UNTIL IT IS  EXCHANGED IN WHOLE OR IN PART FOR  SECURITIES IN
DEFINITIVE REGISTERED FORM, THIS CERTIFICATE MAY NOT BE TRANSFERRED EXCEPT AS
A WHOLE BY DTC TO A NOMINEE OF DTC OR BY A NOMINEE OF DTC TO DTC OR ANY OTHER
NOMINEE  OF DTC OR BY DTC OR ANY  SUCH NOMINEE TO A SUCCESSOR DEPOSITORY OR A
NOMINEE OF SUCH SUCCESSOR DEPOSITORY.

                 MORGAN STANLEY, DEAN WITTER, DISCOVER & CO.
                        JUNIOR SUBORDINATED DEBENTURE

     Morgan  Stanley, Dean  Witter,  Discover &  Co., a  Delaware corporation
(together with its successors and assigns, the "ISSUER"), for value received,
hereby promises  to pay to  The Bank  of New York,  as Property Trustee  (the
"PROPERTY TRUSTEE,"  which term includes  any successor Property  Trustee for
MSDW Capital Trust  (   )) for  MSDW Capital Trust ( ),  a statutory business
trust formed under the laws of the State of Delaware (the "Issuer Trust"), or
registered assignees, the principal sum of

on                 such date, as it  may be advanced as set  forth below, the
"STATED MATURITY," and to pay  interest thereon at the annual rate of       %
from and including               , until the principal hereof is paid or duly
made available  for payment (except  as provided below) payable  quarterly in
arrears on the     day of     ,        ,           and           of each year
(each an "INTEREST PAYMENT DATE") commencing        , 1998.

     Interest  on this  Debenture will  accrue  from and  including the  most
recent Interest Payment Date to which interest has been paid or duly provided
for,  or, if  no  interest has  been  paid  or duly  provided  for, from  and
including               , 1998, until,  but excluding the date  the principal
hereof has  been paid  or duly made  available for  payment. The  interest so
payable, and  punctually paid or duly  provided for, on any  Interest Payment
Date will, subject  to certain exceptions  described herein,  be paid to  the
person  in whose name this Debenture  (or one or more predecessor Debentures)
is registered at the close of business on the          day of       ,      , 
     or          (whether or not a Business Day) next preceding such Interest
Payment  Date (each such  date a "RECORD  DATE").  As  used herein, "BUSINESS
DAY" means any day, other than a Saturday or Sunday, that is neither a  legal
holiday nor a day on which banking institutions are authorized or required by
law or  regulation to  close in The  City of  New York  .   A Holder of  U.S.
$1,000,000 or  more in  aggregate principal amount  of Debentures  having the
same Interest Payment Date, the interest on which is payable in U.S. dollars,
shall be entitled to receive payments of interest, other than interest due at
maturity or  on any  date of  redemption or  repayment, by  wire transfer  of
immediately  available funds if  appropriate wire transfer  instructions have
been received by the  Paying Agent in writing not less than  15 calendar days
prior to the applicable Interest Payment Date.

     Reference is hereby made to the further provisions of this Debenture set
forth on the reverse hereof, which further provisions  shall for all purposes
have the  same  effect as  if set  forth at  this  place, including,  without
limitation, the provisions relating to the subordination of this Debenture to
the Issuer's Senior Indebtedness, as defined on the reverse hereof.

     Unless the certificate of authentication hereon has been executed by the
Trustee by  manual signature, this  Debenture shall  not be  entitled to  any
benefit under  the Junior Subordinated  Indenture, as defined on  the reverse
hereof, or be valid or obligatory for any purpose.

     IN WITNESS  WHEREOF, the  Issuer has  caused this  Debenture to  be duly
executed.

DATED:                        MORGAN STANLEY, DEAN WITTER,
                                   DISCOVER & CO.


                              By:
                                 -----------------------------------------
                                 Name:
                                 Title:

TRUSTEE'S CERTIFICATE
     OF AUTHENTICATION

This is one of the Debentures referred
     to in the within-mentioned
     Junior Subordinated Indenture.

DATED:

THE BANK OF NEW YORK,
     as Trustee


By:
   --------------------------------
     Authorized Signatory

                            (REVERSE OF SECURITY)

     This debenture  is one  of a duly  authorized issue  of        %  Junior
Subordinated Debentures due                (the "DEBENTURES") of  the Issuer.
The Debentures are  issuable under a Junior Subordinated  Indenture, dated as
of (      ), 1998, between  Morgan Stanley, Dean Witter, Discover  & Co. (the
"ISSUER") and  The Bank of  New York, as  Trustee (the "TRUSTEE,"  which term
includes  any successor trustee under the Junior Subordinated Indenture) (the
"JUNIOR  SUBORDINATED  INDENTURE"), to  which  Junior Subordinated  Indenture
reference  is  hereby  made  for   a  statement  of  the  respective  rights,
limitations  of rights, duties and immunities  of the Issuer, the Trustee and
holders of the  Debentures and the terms  upon which the Debentures  are, and
are to be, authenticated and delivered.  The Issuer has appointed The Bank of
New York at its corporate trust office in  The City of New York as the paying
agent (the  "PAYING AGENT," which  term includes any additional  or successor
Paying Agent appointed  by the Issuer) with respect to the Debentures. To the
extent  not  inconsistent herewith,  the  terms  of  the Junior  Subordinated
Indenture are hereby incorporated by reference herein.  Capitalized terms not
otherwise defined herein have the meaning  given to such terms in the  Junior
Subordinated Indenture.

     This Debenture will  not be subject to  any sinking fund and,  except as
provided below, will not be redeemable or subject to repayment at  the option
of the holder prior to its Stated Maturity.

     This  Debenture may be redeemed  at the option  of the Issuer  (i) on or
after             in  whole at any time or in part from time to time and (ii)
prior to (          ), in whole  (but not in part) at any time within 90 days
following the  occurrence and continuation  of a Tax  Event or an  Investment
Company Event (the "90-DAY PERIOD"), in each case at a redemption price equal
to the  accrued  and unpaid  interest on  the Debentures,  plus  100% of  the
principal amount thereof (the "REDEMPTION PRICE"). Notice of redemption shall
be  mailed  to  the  registered  holders of  the  Debentures  designated  for
redemption  at their  addresses as  the  same shall  appear on  the Debenture
register not less than  30 nor more than 60 days prior to  the date fixed for
redemption,  subject to  all  the  conditions and  provisions  of the  Junior
Subordinated Indenture. In the event of  redemption of this Debenture in part
only, a new Debenture or Debentures for the amount of the  unredeemed portion
hereof shall be issued in the name of the holder hereof upon the cancellation
hereof.

     The Issuer's  right to redeem  the Debentures  under clause (ii)  of the
preceding paragraph  shall be subject  to the condition  that if at  the time
there is available to the Issuer or the  MSDW Capital Trust  ( ) (the "ISSUER
TRUST," created pursuant to the Amended and Restated Trust Agreement dated as
of  (               ), 1998, among the Issuer, as  depositor, The Bank of New
York,  as Property  Trustee, The  Bank of  New York  (Delaware),  as Delaware
Trustee and  the Administrators,  the "TRUST  AGREEMENT") the opportunity  to
eliminate,  within the  90-Day Period,  the Tax  Event or  Investment Company
Event by  taking  some ministerial  action  ("MINISTERIAL ACTION"),  such  as
filing a  form  or  making  an  election,  or  pursuing  some  other  similar
reasonable measure that will have no adverse effect on the Issuer, the Issuer
Trust or the  holders of the securities  issued by the Issuer Trust  and will
involve no material  cost, the Issuer shall  pursue such measures in  lieu of
redemption;  provided further, that the Issuer  shall have no right to redeem
the  Debentures while  the Issuer  Trust is  pursuing any  Ministerial Action
pursuant to the Trust Agreement.  The Redemption Price shall be paid prior to
12:00 noon, New York  time, on the  date of such  redemption or such  earlier
time as the  Issuer determines; provided, that the Issuer  shall deposit with
the Trustee an  amount sufficient to  pay the Redemption  Price prior to  the
redemption date.

     In  addition, if a Tax Event occurs, then the Issuer will have the right
prior to the  termination of the Issuer Trust, to advance the Stated Maturity
of this  Debenture to the minimum extent  required in order to  allow for the
payments of  interest  in  respect  this Debenture  to  continue  to  be  tax
deductible, but in no event shall the resulting maturity of this Debenture be
less than 15 years  from the date of original  issuance thereof.  The  Stated
Maturity shall be advanced only  if, in the opinion of counsel to the Issuer,
experienced  in such  matters,  (a)  after  advancing  the  Stated  Maturity,
interest paid on this Debenture will be deductible  for United States federal
income tax purposes and (b) advancing the  Stated Maturity will not result in
a taxable event to the holders of the Capital Securities.

     The term "TAX EVENT" means the receipt by the Issuer Trust of an opinion
of counsel to  the Issuer experienced  in such matters,  who shall not  be an
officer or  employee of the  Issuer or any of  its affiliates, to  the effect
that, as a  result of any  amendment to, or  change (including any  announced
prospective  change) in,  the laws  (or  any regulations  thereunder) of  the
United States  or any  political subdivision or  taxing authority  thereof or
therein, or  as a result of  any official or administrative  pronouncement or
action  or   judicial  decision  interpreting   or  applying  such   laws  or
regulations, which amendment  or change is effective or  which pronouncement,
action or decision is announced  on or after the date of issuance  of Capital
Securities of the Issuer Trust, there is more than an insubstantial risk that
(i) the Issuer  Trust is, or will be  within 90 days of the  delivery of such
opinion, subject to United  States federal income tax with respect  to income
received or accrued on the Debentures, (ii) interest payable by the Issuer on
the Debentures is not, or within 90 days of the delivery of such opinion will
not be,  deductible by  the Issuer, in  whole or in  part, for  United States
federal  income tax purposes or (iii) the Issuer  Trust is, or will be within
90  days of the  delivery of the opinion,  subject to more  than a de minimis
amount of other taxes, duties or other governmental charges.

     "INVESTMENT COMPANY EVENT" means  the receipt by the Issuer  Trust of an
opinion of counsel to  the Issuer experienced in such matters,  who shall not
be an  officer or employee  of the Issuer  or any  of its affiliates,  to the
effect that, as a  result of the occurrence of a change  in law or regulation
or  a  written  change  (including  any  announced  prospective  change)   in
interpretation or application  of law or regulation by  any legislative body,
court, governmental  agency or  regulatory authority, there  is more  than an
insubstantial risk  that  the  Issuer  Trust  is or  will  be  considered  an
"investment company" that  is required to be registered  under the Investment
Company Act of 1940, as amended (the "Investment  Company Act"), which change
or prospective  change becomes  effective or would  become effective,  as the
case  may be, on or after the date  of the issuance of the Capital Securities
of the Issuer Trust.  

     Interest payments on this Debenture will include interest accrued to but
excluding  the Interest Payment Dates or  the Stated Maturity (or any earlier
redemption or repayment  date), as the  case may be.   Interest payments  for
this Debenture will be computed  and paid on the basis  of a 360-day year  of
twelve 30-day  months and the actual days elapsed in  a partial month in such
period.  The amount  of interest payable for any full interest period will be
computed by dividing the rate  per annum by four.   Accrued interest that  is
not  paid  on the  applicable  Interest  Payment  Date will  bear  additional
interest on the amount thereof at the rate per  annum of      % (the  "COUPON
RATE"), compounded quarterly and computed on  the basis of a 360-day year  of
twelve 30-day months and the actual  days elapsed in a partial month in  such
period.  The  amount of  additional interest  payable for  any full  interest
period will be  computed by dividing the  rate per annum  by four.  The  term
"interest' as used  herein includes quarterly interest payments,  interest on
quarterly interest payments not paid  on the applicable Interest Payment Date
and Additional Sums (as defined below), as applicable.

     If any Interest Payment Date  or the Stated Maturity (or any  redemption
or  repayment date)  does not fall  on a  Business Day, payment  of interest,
premium, if any, or principal otherwise payable on such date need not be made
on such date,  but may be made on  the next succeeding Business  Day,  except
that, if such Business Day falls in the next calendar year, such payment will
be made on  the immediately preceding  Business Day,  in  each case, with the
same  force and effect  as if  made on  the Interest Payment  Date or  at the
Stated Maturity   (or any redemption or  repayment date), and no  interest on
such payment shall accrue for the period  from and after the Interest Payment
Date or  the Stated Maturity  (or any redemption  or repayment date)  to such
next succeeding Business Day.

     The  Junior Subordinated  Indenture provides  that, (a)  if an  Event of
Default (as defined in the Junior  Subordinated Indenture) due to the default
in payment of  principal of, premium, if  any, or interest on,  any series of
debt securities issued under the Junior Subordinated Indenture, including the
series  of Debentures of  which this Debenture  forms a  part, or due  to the
default in the performance or breach of any other covenant or warranty of the
Issuer applicable to the debt securities of such series but not applicable to
all   outstanding  debt  securities  issued  under  the  Junior  Subordinated
Indenture shall have occurred  and be continuing,  either the Trustee or  the
holders of not  less than 25% in  principal amount of the debt  securities of
each affected  series  (voting  as  a  single class)  may  then  declare  the
principal of  all debt  securities of  all such  series and  interest accrued
thereon to be due  and payable immediately and (b) if an Event of Default due
to a default in the performance of  any other of the covenants or  agreements
in  the  Junior Subordinated  Indenture  applicable to  all  outstanding debt
securities issued  thereunder, including  this Debenture,  or due  to certain
events of bankruptcy, insolvency and reorganization of the Issuer, shall have
occurred and be  continuing, either the  Trustee or the  holders of not  less
than 25% in principal amount of  all debt securities issued under the  Junior
Subordinated Indenture  then outstanding (treated  as one class)  may declare
the principal of all such debt securities  and interest accrued thereon to be
due and  payable immediately, but  upon certain conditions  such declarations
may be annulled and past defaults may be waived (except a  continuing default
in  payment  of principal  (or  premium, if  any)  or interest  on  such debt
securities)  by the  holders of a  majority in  principal amount of  the debt
securities of all affected series then outstanding.  Deferral of any due date
for  the payment  of interest  in  connection with  an  Extension Period  (as
defined herein) doesan Event of Default.

     So  long  as  no  Event  of  Default has occurred and is continuing, the
Issuer  shall  have  the right at any time, and from time to time, during the
term  of  the  Debentures  to  defer  payments  of  interest by extending the
interest  payment  period  of  this  Debenture  for a period not exceeding 20
consecutive  quarters (the "EXTENSION PERIOD"), during which Extension Period
no  interest shall be due and payable; provided, that no Extension Period may
extend  beyond  the Stated Maturity. In the event that the Stated Maturity is
advanced  to  a  date prior to the end of an Extension Period, such Extension
Period  shall  be  deemed to end on such  date or such earlier date as may be
determined  by  the  Company.  In  the  event   that  any Junior Subordinated
Debentures  are  called  for  redemption  on  a  date  prior to the end of an
Extension  Period,  with respect to such Junior Subordinated Debentures, such
Extension  Period shall be deemed to end on such date or such earlier date as
may  be  determined  by  the Company. Interest, the payment of which has been
deferred  because of the extension of the interest payment period pursuant to
this  paragraph,  will  bear  interest  thereon at the Coupon Rate compounded
quarterly  for each quarter of the Extension Period and computed on the basis
of  a  360-day  year of twelve 30-day months and the actual days elapsed in a
partial  month  in  such  period  ("ADDITIONAL  INTEREST").  The  Coupon Rate
payable  for  any  full interest period will be computed by dividing the rate
per  annum  by four. At the end of the Extension Period, the Issuer shall pay
all  interest  accrued and unpaid on this Debenture, including any Additional
Sums  and  Additional  Interest (together, "DEFERRED INTEREST") that shall be
payable  to  the  Holders  of this Debenture in whose names this Debenture is
registered  in the Securities Register on the first Record Date after the end
of  the Extension Period. Before the termination of any Extension Period, the
Issuer  may  further  extend such period; provided, that such period together
with  all  such  further  extensions  thereof shall not exceed 20 consecutive
quarters,  or  extend  beyond  the  Stated Maturity or any earlier redemption
date.  Upon  the  termination of any Extension Period and upon the payment of
all  Deferred  Interest  then  due,  the  Issuer may commence a new Extension
Period,  subject  to the foregoing requirements. No interest shall be due and
payable  during  an  Extension  Period,  except  at the end thereof, (but the
Issuer  may  prepay  at  any  time all or any portion of the interest accrued
during an Extension Period).

     If the Property Trustee (as defined in the Trust Agreement) is  the only
Holder of the Debentures at the time  the Issuer selects an Extension Period,
the Issuer shall give written notice to the Administrators (as defined in the
Trust Agreement) and the Property Trustee of  its selection of such Extension
Period at least  30 calendar  days prior  to the date  the Distributions  (as
defined in the  Trust Agreement) on the  Trust Securities (as defined  in the
Trust Agreement)  would have been payable but for  the election to begin such
Extension Period.

     If the  Property Trustee is not the only Holder of the Debentures at the
time  the  Issuer selects  an  Extension Period,  the  Issuer shall  give the
Holders of the  Debentures and the Trustee written notice of its selection of
such  Extension Period at  least 10 Business  Days before the  earlier of the
next succeeding Interest Payment Date or  the date  the Issuer is required to
give notice of the record or payment date of such interest payment to Holders
of the Debentures.

     The Issuer covenants that it will  not (i) declare or pay any  dividends
or  distributions on,  or redeem,  purchase, acquire,  or make  a liquidation
payment with respect  to, any of the Issuer's capital stock  or (ii) make any
payment  of  principal  of or  interest  or  premium, if  any,  on  or repay,
repurchase or  redeem any debt securities of the  Issuer that rank pari passu
in all  respects with or junior in interest to the Debentures (other than (a)
repurchases, redemptions or other acquisitions  of shares of capital stock of
the Issuer  (1) in connection with  any employment contract, benefit  plan or
other  similar  arrangement  with or  for  the  benefit of  any  one  or more
employees,  officers, directors  or  consultants, (2)  in  connection with  a
dividend reinvestment or stockholder stock purchase plan or (3) in connection
with the issuance of capital  stock of the Issuer (or  securities convertible
into  or  exercisable  for  such   capital  stock)  as  consideration  in  an
acquisition transaction entered into prior to the applicable Extension Period
or other event referred to below, (b) as  a result of an exchange, redemption
or conversion of any  class or series of the  Issuer's capital stock (or  any
capital stock of a subsidiary of  the Issuer) for any class or series  of the
Issuer's capital stock or of any class or series of the Issuer's indebtedness
for  any class or series of  the Issuer's capital stock,  (c) the purchase of
fractional interests in shares of the Issuer's  capital stock pursuant to the
conversion or exchange provisions of such capital stock or the security being
converted or exchanged, (d) any declaration of a dividend in connection  with
any stockholder's  rights plan,  or the  issuance of rights,  stock or  other
property under any stockholder's rights plan, or the redemption or repurchase
of rights  pursuant thereto,  (e) payments under  the Guarantee  executed and
delivered by the Issuer and The Bank of New York, as trustee, for the benefit
of the holders  of any Capital  Securities, as amended)  any dividend in  the
form of stock,  warrants, options or other rights where the dividend stock or
the stock issuable upon exercise of such warrants, options or other rights is
the  same stock as  that on which  the dividend is  being paid  or ranks pari
passu with or junior to such  stock), if at such time (i) there  has occurred
any event (a) of which the Issuer  has actual knowledge that with the  giving
of notice or the lapse  of time, or both, would constitute a  Debenture Event
of Default and  (b) that the Issuer  has not taken reasonable  steps to cure,
(ii) if the Debentures are held by the Issuer Trust, the Issuer is in default
with respect to its  payment of any obligations under the  Guarantee or (iii)
the  Issuer has  given  notice of  its  election of  an  Extension Period  as
provided  in the  Junior Subordinated  Indenture and  has not  rescinded such
notice, or such Extension Period, or any extension thereof, is continuing.

     As long  as any  Debentures are  held by  the Issuer  Trust, the  Issuer
covenants (i) to continue to hold, directly or indirectly, 100% of the Common
Securities,  provided that certain successors that  are permitted pursuant to
the Junior  Subordinated Indenture may  succeed to the Issuer's  ownership of
the Common  Securities, (ii)  as  holder of  the  Common Securities,  not  to
voluntarily dissolve, windup or liquidate the Issuer Trust, other than (a) in
connection with  a distribution of Debentures  to the holders of  the Capital
Securities in  liquidation  of the  Issuer Trust  or (b)  in connection  with
certain  mergers,  consolidations  or amalgamations  permitted  by  the Trust
Agreement  and (iii) to use its reasonable efforts, consistent with the terms
and provisions of the Trust Agreement, to  cause the Issuer Trust to continue
not to  be taxable  as a  corporation for  United States  federal income  tax
purposes.

     If, and  for so long as, (i)  the Issuer Trust is the  holder of all the
Debentures and (ii) the Issuer Trust is required to pay any additional taxes,
duties or  other governmental charges as a result  of a Tax Event, the Issuer
will  pay as  additional  sums  on the  Debentures  ("ADDITIONAL SUMS")  such
amounts as may be required so that the Distributions (as defined in the Trust
Agreement) paid by  the Issuer Trust will  not be reduced as a  result of any
such additional taxes, duties or other governmental charges.

     The Issuer, as  borrower, agrees to pay all debts  and other obligations
(other  than  with respect  to the  Capital Securities  issued by  the Issuer
Trust) and all  costs and expenses of  the Issuer Trust (including  costs and
expenses  relating to  the organization  of  the Issuer  Trust, the  fees and
expenses of the Issuer Trustees (as  defined in the Trust Agreement) for  the
Issuer Trust  and the  costs and expenses  relating to  the operation  of the
Issuer Trust) and to pay  any and all taxes and  all costs and expenses  with
respect thereto  (other than  United States withholding  taxes) to  which the
Issuer Trust  might become subject.  The  foregoing obligations of the Issuer
under the  Debentures owned by the  Issuer Trust are for the  benefit of, and
shall  be enforceable  by, any  person to  whom any such  debts, obligations,
costs,  expenses and  taxes  are  owed (a  "CREDITOR")  whether  or not  such
Creditor has received  notice thereof.   Any such  Creditor may enforce  such
obligations  of  the Issuer  directly  against  the  Issuer, and  the  Issuer
irrevocably waives any right or remedy to require that any such Creditor take
any  action against  the Issuer Trust  or any other  person before proceeding
against  the Issuer.  The Issuer agrees  to execute any additional agreements
as may be necessary or desirable to give full effect to the foregoing.

     The  provisions  of  Section  3.04  and  Section  10.01  of  the  Junior
Subordinated  Indenture  relating  to   discharge,  defeasance  and  covenant
defeasance are not applicable to this Debenture.

     This Debenture  and all other  obligations of the Issuer  hereunder will
constitute part of the junior subordinated debt of the Issuer, will be issued
under the Junior Subordinated Indenture and will be subordinate and junior in
right  of payment, to  the extent and in  the manner set  forth in the Junior
Subordinated  Indenture, to  all  "Senior Indebtedness"  of  the Issuer.  The
Junior Subordinated  Indenture defines "SENIOR  INDEBTEDNESS" as  obligations
issued under the  Senior Indenture between Morgan Stanley  (as predecessor to
the Issuer) and The  Chase Manhattan Bank (formerly known  as Chemical Bank),
as trustee,  dated April  15, 1989, as  supplemented by a  First Supplemental
Senior  Indenture  dated  as  of  May 15,  1991  and  a  Second  Supplemental
Indenture, dated as  of April  15, 1996  and a  Third Supplemental  Indenture
dated as of June 1, 1997, between the Issuer and The Chase Manhattan Bank, as
trustee,  or  the Senior  Subordinated Indenture  between Morgan  Stanley (as
predecessor  to the  Issuer)  and  The First  National  Bank of  Chicago,  as
trustee, dated as of April 15, 1989, as supplemented by a  First Supplemental
Subordinated Indenture  dated as of  May 15,  1991 and a  Second Supplemental
Subordinated Indenture dated as of April 15, 1996 and by a Third Supplemental
Subordinated Indenture dated  as of June 1,  1997 between the Issuer  and The
First  National Bank of Chicago, as trustee, and any other obligations (other
than non-recourse obligations, the debt securities, including this debenture,
issued  under the  Junior  Subordinated Indenture  or  any other  obligations
specifically designated  as being subordinate  in right of payment  to Senior
Indebtedness) of, or guaranteed or assumed by, the Issuer  for borrowed money
or evidenced by  bonds, debentures, Debentures or other  similar instruments,
and amendments,  renewals, extensions,  modifications and  refundings of  any
such indebtedness or obligation.

     This Debenture, and any Debenture  or Debentures issued upon transfer or
exchange hereof, is issuable only  in fully registered form, without coupons,
and is  issuable only in denominations of U.S.  $25 and any integral multiple
of  U.S.  $25 in  excess  thereof,  unless otherwise  indicated  on the  face
thereof.

     The Bank  of New York  has been appointed  registrar for  the Debentures
(the "REGISTRAR,"  which term includes  any successor registrar  appointed by
the Issuer), and the Registrar will maintain at its office in The City of New
York  a  register for  the  registration  and  transfer of  Debentures.  This
Debenture may  be transferred  at the  aforesaid office  of the  Registrar by
surrendering  this Debenture  for  cancellation,  accompanied  by  a  written
instrument  of  transfer in  form  satisfactory  to  the Registrar  and  duly
executed by  the  registered  holder hereof  in  person or  by  the  holder's
attorney duly authorized in writing,  and thereupon the Registrar shall issue
in the name  of the  transferee or  transferees, in exchange  herefor, a  new
Debenture or  Debentures having identical  terms and provisions and  having a
like aggregate principal amount in  authorized denominations, subject to  the
terms and conditions set forth  herein; provided, however, that the Registrar
will  not  be  required (i)  to  register  the transfer  of  or  exchange any
Debenture that has been called for redemption in whole or in part, except the
unredeemed portion of  Debentures being redeemed in part or  (ii) to register
the transfer of or exchange Debentures to the extent and during the period so
provided in the Junior Subordinated  Indenture with respect to the redemption
of  Debentures.  Debentures   are  exchangeable  at  said  office  for  other
Debentures of  other authorized  denominations of  equal aggregate  principal
amount  having  identical  terms  and  provisions.  All  such  exchanges  and
transfers of Debentures  will be free of  charge, but the Issuer  may require
payment of a sum sufficient to cover any tax  or other governmental charge in
connection  therewith. All  Debentures  surrendered  for  exchange  shall  be
accompanied by a written instrument  of transfer in form satisfactory  to the
Registrar and executed  by the registered holder in person or by the holder's
attorney  duly  authorized  in  writing.  The date  of  registration  of  any
Debenture deliebentures  shall  be such  that  no gain  or loss  of  interest
results from such exchange or transfer.

     In case this Debenture shall at any time become mutilated, defaced or be
destroyed, lost or stolen  and this Debenture or evidence of  the loss, theft
or destruction thereof  (together with the indemnity  hereinafter referred to
and such other documents or  proof as may be required in the  premises) shall
be delivered to the  Registrar, a new Debenture of like  tenor will be issued
by the Issuer in exchange for this Debenture, but, if this Debenture has been
destroyed, lost  or stolen, only upon receipt of evidence satisfactory to the
Registrar and the Issuer that such Debenture  was destroyed or lost or stolen
and, if  required, upon  receipt also  of indemnity  satisfactory to  each of
them.  All expenses  and reasonable  charges  associated with  procuring such
indemnity  and with  the preparation,  authentication and  delivery of  a new
Debenture  shall be borne by  the owner of  the Debenture mutilated, defaced,
destroyed, lost or stolen.

     The Junior  Subordinated Indenture permits  the Issuer and  the Trustee,
with the  consent of the  holders of  not less than  a majority in  aggregate
principal amount of the debt securities of all series issued under the Junior
Subordinated  Indenture then outstanding and affected  (voting as one class),
to execute  supplemental indentures adding  any provisions to or  changing in
any manner the  rights of the  holders of each  series so affected;  provided
that the Issuer and the Trustee may not, without the consent of the holder of
each outstanding debt security affected thereby and the prior written consent
of each Holder of  Capital Securities, to the extent that  the Debentures are
held by a MSDW Capital Trust, (a) extend the final  maturity of any such debt
security,  or reduce  the principal  amount thereof,  or reduce  the rate  or
extend the time of payment of interest  thereon, except as otherwise provided
herein or in the Junior Subordinated Indenture, or reduce  any amount payable
on  redemption  or repayment  thereof,  or  change  the currency  of  payment
thereof, or impair or affect the rights  of any holder to institute suit  for
the payment thereof without the consent  of the holder of each debt  security
so affected  or (b) reduce  the aforesaid  percentage in principal  amount of
debt securities the consent of the holders of which is required for  any such
supplemental  indenture; provided, however,  that neither this  Debenture nor
the Junior Subordinated  Indenture may be amended to  alter the subordination
provisions hereof or  thereof without the written  consent of each  holder of
Senior  Indebtedness  then  outstanding  that  would  be  adversely  affected
thereby.   In  addition, so  long  as any  of the  Capital  Securities remain
outstanding,  no such  modification may  be made  that adversely  affects the
holders  of  such  Capital  Securities   in  any  material  respect,  and  no
termination of  the Junior Subordinated Indenture may occur, and no waiver of
any  Event  of  Default or  compliance  with  any covenant  under  the Junior
Subordctive, without the  prior consent of the holders of at least a majority
of the  aggregate Liquidation  Amount of  the outstanding  Capital Securities
unless and until  the principal of (and  premium, if any, on)  the Debentures
and all  accrued  and unpaid  interest thereon  have been  paid  in full  and
certain  other  conditions are  satisfied.  So  long as  the  Issuer acts  in
accordance  with the  terms of  the Debentures,  the Issuer  may shorten  the
Stated Maturity of and defer interest payable on the Debentures, in each case
without the consent of the Issuer Trust or the holders of Capital Securities.
However, the Issuer may not amend the Junior Subordinated Indenture to remove
the rights  of holders  of Capital  Securities to institute  a Direct  Action
without the prior written consent of all the holders of Capital Securities of
each trust.

     So long as this Debenture shall be outstanding, the Issuer will cause to
be maintained an office  or agency for  the payment of  the principal of  and
premium, if  any, and interest  on this Debenture  as herein provided  in the
Borough of Manhattan, The  City of New York, and an office  or agency in said
Borough of Manhattan for the registration, transfer and exchange as aforesaid
of the Debentures. The Issuer may designate other agencies for the payment of
said principal,  premium and  interest at such  place or  places (subject  to
applicable laws and regulations)  as the Issuer may decide. So  long as there
shall be such  an agency, the  Issuer shall keep  the Trustee advised of  the
names and locations of such agencies, if any are so designated.

     With respect to moneys paid by the Issuer and held by the Trustee or any
Paying Agent for payment of  the principal of or interest or premium, if any,
on  any Debentures that remain unclaimed  at the end of  two years after such
principal, interest or premium shall have become  due and payable (whether at
maturity or upon call  for redemption or otherwise), (i) the  Trustee or such
Paying  Agent shall notify  the holders of  such Debentures that  such moneys
shall be  repaid to  the Issuer  and any  person claiming  such moneys  shall
thereafter look only to  the Issuer for payment thereof and  (ii) such moneys
shall  be so repaid to  the Issuer. Upon such repayment  all liability of the
Trustee  or such Paying  Agent with  respect to  such moneys  shall thereupon
cease, without,  however, limiting in any way  any obligation that the Issuer
may have  to pay  the principal of  or interest or  premium, if any,  on this
Debenture as the same shall become due.

     No provision of  this Debenture or of the  Junior Subordinated Indenture
shall  alter or impair  the obligation of  the Issuer, which  is absolute and
unconditional, to pay the principal of, premium, if any, and interest on this
Debenture at the time,  place, and rate, and in the  coin or currency, herein
prescribed  unless otherwise  agreed between  the  Issuer and  the registered
holder of this Debenture.

     Prior to due presentment of this Debenture for registration of transfer,
the Issuer, the Trustee and any agent  of the Issuer or the Trustee may treat
the holder in whose name this Debenture is registered as the owner hereof for
all purposes,  whether or  not this  Debenture be  overdue, and  none of  the
Issuer, the Trustee  or any  such agent shall  be affected by  notice to  the
contrary.

     No recourse shall be  had for the payment of the  principal of, premium,
if any, or the  interest on this  Debenture, for any  claim based hereon,  or
otherwise  in  respect  hereof, or  based  on  or in  respect  of  the Junior
Subordinated Indenture  or any  indenture supplemental  thereto, against  any
incorporator,  shareholder, officer  or director,  as such, past,  present or
future, of  the Issuer or  of any successor  corporation, either directly  or
through the  Issuer or  any successor corporation,  whether by virtue  of any
constitution, statute or  rule of law or by the enforcement of any assessment
or penalty or otherwise,  all such liability being, by the  acceptance hereof
and as part of  the consideration for the issue hereof,  expressly waived and
released.

     This  Debenture shall for all purposes be  governed by, and construed in
accordance with, the laws of the State of New York.

     All  terms  used in  this  Debenture which  are  defined  in the  Junior
Subordinated Indenture  and  not  otherwise  defined herein  shall  have  the
meanings assigned to them in the Junior Subordinated Indenture.

                                ABBREVIATIONS

     The following abbreviations, when used in the inscription on the face of
this instrument, shall be construed as  though they were written out in  full
according to applicable laws or regulations:

          TEN COM   -    as tenants in common
          TEN ENT   -    as tenants by the entireties
          JT TEN    -    as  joint tenants with right of survivorship and not
                         as tenants in common


     UNIF GIFT MIN ACT - ______________ Custodian _________________
                           (Minor)                  (Cust)

     Under Uniform Gifts to Minors Act _________________________
                                               (State)

     Additional abbreviations may also be used though not in the above list.

                           _______________________


     FOR  VALUE RECEIVED,  the  undersigned  hereby  sell(s),  assign(s)  and
transfer(s) unto


_________________________________________________
(PLEASE INSERT SOCIAL SECURITY OR OTHER
   IDENTIFYING NUMBER OF ASSIGNEE)

_____________________________________________________________________________

_____________________________________________________________________________

_____________________________________________________________________________
(PLEASE PRINT OR TYPE NAME AND ADDRESS, INCLUDING ZIP CODE, OF ASSIGNEE)

the   within  Debenture  and   all  rights  thereunder,   hereby  irrevocably
constituting and appointing  such person attorney to  transfer such Debenture
on the books of the Issuer, with full power of substitution in the premises.


Dated:__________________________

NOTICE:   The signature to  this assignment must correspond with  the name as
          written upon the  face of the within Debenture  in every particular
          without alteration or enlargement or any change whatsoever.


Signature Guaranty: _____________________________
                    Signatures must be  guaranteed by an  "eligible guarantor
                    institution" meeting the requirements of the (Registrar),
                    which requirements include membership or participation in
                    the Security  Transfer Agent Medallion  Program ("STAMP")
                    or such  other "signature  guarantee program"  as may  be
                    determined  by  the  (Registrar) in  addition  to,  or in
                    substitution  for,  STAMP,  all in  accordance  with  the
                    Securities Exchange Act of 1934, as amended.