MORGAN STANLEY DEAN WITTER & CO
424B3, 1998-04-08
FINANCE SERVICES
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PROSPECTUS Dated March 26, 1998                    Pricing Supplement No. 4 to
PROSPECTUS SUPPLEMENT                     Registration Statement No. 333-46935
Dated March 26, 1998                                            March 31, 1998
                                                                Rule 424(b)(3)
                                  $9,000,000
                       Morgan Stanley Dean Witter & Co.
                          MEDIUM-TERM NOTES, SERIES C
                            Senior Fixed Rate Notes


                   1% EXCHANGEABLE NOTES DUE APRIL 15, 2005


                  Exchangeable For Shares of Common Stock of
                      Six Telecommunications Corporations


               The 1% Exchangeable Notes due April 15, 2005 (the "Notes"), are
Medium-Term Notes, Series C (Senior Fixed Rate Notes) of Morgan Stanley Dean
Witter & Co. (the "Company"), as further described below and in the Prospectus
Supplement under "Description of Notes--Fixed Rate Notes" and "--Exchangeable
Notes."  The Notes will bear interest at the rate of 1% per annum (the "Stated
Coupon Rate") payable semi-annually on April 15 and October 15 of each year
(each an "Interest Payment Date") commencing October 15, 1998.  The issue price
of each Note will be $1,000 (the "Issue Price").  The Notes are issued in
minimum denominations of $1,000 and will mature on April 15, 2005.

               On any Exchange Date (as defined herein), the holder of a Note
will have the right (the "Exchange Right"), subject to a prior call of the
Notes for cash by the Company (as described in the immediately succeeding
paragraph) and upon completion by the holder and delivery to the Company and
the Calculation Agent of an Official Notice of Exchange prior to 11:00 a.m.
New York City time on such date, to exchange each $1,000 principal amount of
such Note for a basket (the "Basket") of the common stocks of six
telecommunications corporations (the "Basket Corporations") listed herein
(collectively the "Basket Stocks" and individually a "Basket Stock"), subject
to the Company's right to pay cash in lieu of delivering such Basket Stocks,
as described below.  The Basket consists of a fixed number of shares of each
Basket Stock (each such number an "Exchange Ratio") calculated on the date of
pricing so that each Basket Stock constitutes an assigned percentage of the
Initial Basket Value. The Initial Basket Value has been set to equal $843.88
per Note based on the Market Prices of the Basket Stocks on the date hereof.
See "Basket Stocks" in this Pricing Supplement. The Company may at its option
upon the exchange of any Note pay cash in an amount for each $1,000 principal
amount of such Note equal to the sum of the products of the Market Price of
each Basket Stock and the Exchange Ratio for such Basket Stock, each as
determined by the Calculation Agent on the Exchange Date (the "Basket Value")
in lieu of delivering the Basket Stocks.  The Exchange Ratio with respect to
any Basket Stock will remain constant for the term of the Notes unless
adjusted for certain corporate events.  See "Adjustments to the Exchange
Ratios and the Basket" in this Pricing Supplement.  An Exchange Date will be
any Trading Day (as defined herein) that falls during the period beginning
July 6, 1998 and ending on the day prior to the earliest of the Maturity Date,
the Call Date (as defined below) and, in the event of a call for cash as
described under "Company Exchange Right" herein, the Company Notice Date (as
defined herein).

               On or after April 1, 2001, the Company may call the Notes, in
whole but not in part, for mandatory exchange into the Basket Stocks at their
respective Exchange Ratios; provided that, if the Basket Value (as defined
herein) as determined on the Trading Day immediately prior to the Company
Notice Date is less than the Call Price (as defined herein) for such Company
Notice Date, the Company will pay such applicable Call Price in cash on the
date (the "Call Date") not less than 30 nor more than 60 days after the
Company Notice Date, as specified by the Company.  If the Notes are so called
for mandatory exchange, the Basket Stocks or cash to be delivered to holders
of Notes will be delivered on the Call Date.

               The Basket Corporations are neither affiliated with the Company
nor involved in this offering of the Notes.  See "Historical Information" in
this Pricing Supplement for information on the range of Market Prices for the
Basket Stocks.

               The Company will cause the Basket Value and any adjustments to
the Exchange Ratios to be determined by the Calculation Agent for The Chase
Manhattan Bank (formerly known as Chemical Bank) as Trustee under the Senior
Debt Indenture.

               An investment in the Notes entails risks not associated with
similar investments in a conventional debt security, as described under " Risk
Factors" on PS-6 and PS-7 herein.

               The Notes have been approved for listing on the American Stock
Exchange, Inc. ("AMEX"), subject to official notice of issuance.  The AMEX
symbol for the Notes is "TBB.A."  It is not possible to predict whether the
Notes will trade in the secondary market or if such market will be liquid or
illiquid.


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

                        PRICE 100% AND ACCRUED INTEREST

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


<TABLE>
                       Price to Public(1)        Agent's Commissions(2)          Proceeds to Company(1)
                       ------------------        ----------------------          ----------------------
<S>                    <C>                       <C>                             <C>
Per Note..........                  100%                        .25%                          99.75%
Total.............           $9,000,000                      $22,500                      $8,977,500
</TABLE>

(1) Plus accrued interest, if any, from April 7, 1998.

(2) The Company has agreed to indemnify the Agent against certain liabilities,
    including liabilities under the Securities Act of 1933.

                          MORGAN STANLEY DEAN WITTER


                     (This page intentionally left blank)


   CERTAIN PERSONS PARTICIPATING IN THIS OFFERING MAY ENGAGE IN TRANSACTIONS
   THAT STABILIZE, MAINTAIN OR OTHERWISE AFFECT THE PRICE OF THE BASKET
   STOCKS.  SPECIFICALLY, THE AGENT MAY OVERALLOT IN CONNECTION WITH THE
   OFFERING, AND MAY BID FOR, AND PURCHASE THE BASKET STOCKS IN THE OPEN
   MARKET.  FOR A DESCRIPTION OF THESE ACTIVITIES, SEE "USE OF PROCEEDS AND
   HEDGING" IN THIS PRICING SUPPLEMENT AND "PLAN OF DISTRIBUTION" IN THE
   ACCOMPANYING PROSPECTUS SUPPLEMENT.

Capitalized terms not defined herein have the meanings given to such terms in
the accompanying Prospectus Supplement.

Principal Amount..............   $9,000,000

Maturity Date.................   April 15, 2005

Stated Coupon Rate............   1% per annum

Interest Payment Dates........   April 15 and October 15, beginning October
                                 15, 1998

Specified Currency............   U.S. Dollars

Issue Price...................   $1,000

Original Issue Date
(Settlement Date).............   April 7, 1998

CUSIP.........................   617446CX5

Book Entry Note or
Certificated Note..............  Book Entry, DTC

Senior Note or Subordinated
Note...........................  Senior

Minimum Denominations.........   $1,000

Agent.........................   Morgan Stanley & Co. Incorporated

Trustee.......................   The Chase Manhattan Bank

Initial Basket Value..........   $843.88.  Based on the Market Prices (as
                                 defined below) of the Basket Stocks on the
                                 date of this Pricing Supplement, the Exchange
                                 Ratios have been initially set so that the
                                 Basket Value on such date equals the Initial
                                 Basket Value.

Basket Value..................   The Basket Value, for any day, will equal the
                                 sum of the products of the Market Prices and
                                 the applicable Exchange Ratios for each
                                 Basket Stock, each determined as of such date
                                 by the Calculation Agent.

Basket .......................   The basket is a weighted portfolio of the six
                                 Basket Stocks.  See "Basket Stocks" below.

Basket Stocks.................   The following table sets forth the Basket
                                 Stocks, the percentage of the Initial Basket
                                 Value represented by each Basket Stock, the
                                 initial Market Price of each Basket Stock as
                                 of the date of this Pricing Supplement, the
                                 Exchange Ratio of each Basket Stock as of the
                                 date of this Pricing Supplement and the
                                 initial value of each Basket Stock as of the
                                 date of this Pricing Supplement:

<TABLE>
                                                   Percent
                                                 Represented           Initial
                                                  in Initial            Stock               Exchange         Initial
Issuer of Basket Stock               Ticker      Basket Value           Price                Ratio            Value
- ----------------------               ------      ------------          -------              --------         -------
<S>                                 <C>         <C>               <C>               <C>                <C>
Ascend Communications, Inc.
  ("Ascend") ...................      ASND           20%                $37.9375             4.4488         $168.7764
Telefonaktiebolaget LM
  Ericsson ("Ericsson").........     ERICY           10%                $47.5625             1.7743          $84.3901
Lucent Technologies Inc.
  ("Lucent")....................       LU            20%               $127.875              1.3199         $168.7822
Nokia Corporation
  ("Nokia") ADR "A".............      NOK.A          10%               $107.9375             0.7818          $84.3855
Tellabs, Inc. ("Tellabs").......      TLAB           20%                $67.1875             2.5120         $168.7750
WorldCom, Inc.
  ("WorldCom")..................      WCOM           20%                $43.0625             3.9193         $168.7749
</TABLE>

                                 The Exchange Ratio of each Basket Stock
                                 indicates the number of shares of such Basket
                                 Stock, given the Market Price of such Basket
                                 Stock, required to be included in the
                                 calculation of the Initial Basket Value so
                                 that each Basket Stock represents the
                                 percentage of the Initial Basket Value as
                                 assigned to it in the table above as of the
                                 date of this Pricing Supplement.  The
                                 respective Exchange Ratios will remain
                                 constant for the term of the Notes unless
                                 adjusted for certain corporate events.  See
                                 "Adjustments to the Exchange Ratios and the
                                 Basket."

Exchange Right................   On any Exchange Date, subject to a prior call
                                 of the Notes for cash in an amount equal to
                                 the Call Price by the Company as described
                                 under "Company Exchange Right" below, the
                                 holders of Notes will be entitled upon (i)
                                 completion by the holder and delivery to the
                                 Company and the Calculation Agent of an
                                 Official Notice of Exchange (in the form of
                                 Annex A attached hereto) prior to 11:00 a.m.
                                 New York City time on such date and (ii)
                                 delivery on such date of such Notes to the
                                 Trustee, to exchange each $1,000 principal
                                 amount of Notes for a number of shares of
                                 each Basket Stock equal to the Exchange Ratio
                                 for such Basket Stock, subject to adjustment
                                 as described under "Adjustments to the
                                 Exchange Ratios and the Basket" below.  Upon
                                 any such exchange, the Company may, at its
                                 sole option, deliver such Basket Stocks or
                                 pay an amount in cash equal to the Basket
                                 Value on the Exchange Date, as determined by
                                 the Calculation Agent, in lieu of delivering
                                 such Basket Stocks.  Such delivery or payment
                                 will be made 3 Business Days after any
                                 Exchange Date, subject to delivery of such
                                 Notes to the Trustee on the Exchange Date.
                                 Upon any exercise of the Exchange Right,
                                 holders of such exchanged Notes shall not be
                                 entitled to receive accrued but unpaid
                                 interest thereon.  If any Notes are exchanged
                                 after a record date for the payment of
                                 interest and prior to the next succeeding
                                 Interest Payment Date, such Notes must be
                                 accompanied by funds equal to the interest
                                 payable on such succeeding Interest Payment
                                 Date on the principal amount so exchanged.
                                 References to payment "per Note" refer to
                                 each $1,000 principal amount of any Note.

                                 The Company shall, or shall cause the
                                 Calculation Agent to, deliver such Basket
                                 Stocks or cash to the Trustee for delivery to
                                 the holders.

No Fractional Shares .........   If upon any exchange of the Notes the Company
                                 chooses to deliver the Basket Stocks, the
                                 Company will pay cash in lieu of delivering
                                 fractional shares of any Basket Stocks in an
                                 amount equal to the corresponding fractional
                                 Market Price of such Basket Stock as
                                 determined by the Calculation Agent on such
                                 Exchange Date.

Exchange Ratios...............   The Exchange Ratios set forth under "Basket
                                 Stocks" above are subject to adjustment for
                                 certain corporate events.  See "Adjustments
                                 to the Exchange Ratios and Basket" below.

Exchange Date.................   Any Trading Day that falls during the period
                                 beginning July 6, 1998 and ending on the day
                                 prior to the earliest of (i) the Maturity
                                 Date, (ii) the Call Date and (iii) in the
                                 event of a call for cash as described under
                                 "Company Exchange Right" below, the Company
                                 Notice Date.

Company Exchange Right .......   On or after April 1, 2001, the Company may
                                 call the Notes, in whole but not in part, for
                                 mandatory exchange into the Basket Stocks at
                                 the applicable Exchange Ratios; provided
                                 that, if the Basket Value on the Trading Day
                                 immediately preceding the Company Notice Date,
                                 as determined by the Calculation Agent, is
                                 less than the Call Price the Company will pay
                                 such Call Price in cash on the Call Date.  If
                                 the Notes are so called for mandatory
                                 exchange by the Company, then, unless a
                                 holder subsequently exercises the Exchange
                                 Right (the exercise of which will not be
                                 available to the holder following a call for
                                 cash in an amount equal to the Call Price),
                                 the Basket Stocks or cash to be delivered to
                                 holders of Notes will be delivered on the Call
                                 Date fixed by the Company and set forth in
                                 its notice of mandatory exchange, upon
                                 delivery of such Notes to the Trustee.  The
                                 Company shall, or shall cause the Calculation
                                 Agent to, deliver such Basket Stocks or cash
                                 to the Trustee for delivery to the holders.

                                 On or after the Company Notice Date (other
                                 than with respect to a call of the Notes for
                                 cash by the Company) holders of the Notes will
                                 continue to be entitled to exercise the
                                 Exchange Right and receive any amounts
                                 described under "Exchange Right" above.

Company Notice Date...........   Any Trading Day on which the Company issues
                                 its notice of mandatory exchange which must
                                 be 30 to 60 days prior to any Trading Day on
                                 or after April 1, 2001.

Call Price....................   $1,000 per Note.

Market Price..................   If a Basket Stock is listed on a national
                                 securities exchange, is a security of The
                                 Nasdaq National Market ("NASDAQ NMS") or is
                                 included in the OTC Bulletin Board Service
                                 ("OTC Bulletin Board") operated by the
                                 National Association of Securities Dealers,
                                 Inc. (the "NASD"), the Market Price for one
                                 share of such Basket Stock on any Trading Day
                                 means (i) the last reported sale price,
                                 regular way, on such day on the principal
                                 United States securities exchange registered
                                 under the Securities Exchange Act of 1934, as
                                 amended (the "Exchange Act"), on which such
                                 Basket Stock is listed or admitted to trading
                                 or (ii) if not listed or admitted to trading
                                 on any such securities exchange or if such
                                 last reported sale price is not obtainable,
                                 the last reported sale price on the
                                 over-the-counter market as reported on the
                                 NASDAQ NMS or OTC Bulletin Board on such day.
                                 If the last reported sale price is not
                                 available pursuant to clause (i) or (ii) of
                                 the preceding sentence, the Market Price for
                                 any Trading Day shall be the mean, as
                                 determined by the Calculation Agent, of the
                                 bid prices for such Basket Stock obtained
                                 from as many dealers in such security, but
                                 not exceeding three, as will make such bid
                                 prices available to the Calculation Agent.
                                 The term "NASDAQ NMS security" shall include
                                 a security included in any successor to such
                                 system and the term "OTC Bulletin Board
                                 Service" shall include any successor service
                                 thereto.

Trading Day...................   A day on which trading is generally conducted
                                 on the New York Stock Exchange ("NYSE"), the
                                 AMEX, the NASDAQ National Market ("NASDAQ
                                 NMS"), the Chicago Mercantile Exchange and
                                 the Chicago Board of Options Exchange, as
                                 determined by the Calculation Agent.

Calculation Agent.............   Morgan Stanley & Co. Incorporated ("MS & Co.")

                                 Because the Calculation Agent is an affiliate
                                 of the Company, potential conflicts of
                                 interest may exist between the Calculation
                                 Agent and the holders of the Notes, including
                                 with respect to certain determinations and
                                 judgments that the Calculation Agent must make
                                 in making adjustments to the Exchange Ratio
                                 or determining the Market Price or whether a
                                 Market Disruption Event has occurred.  See
                                 "Adjustment to the Exchange Ratios and the
                                 Basket" and "Market Disruption Event" below.
                                 MS & Co. is obligated to carry out its duties
                                 and functions as Calculation Agent in good
                                 faith and using its reasonable judgment.

                                 All percentages resulting from any
                                 calculation on the Notes will be rounded to
                                 the nearest one hundred-thousandth of a
                                 percentage point, with five one-millionths of
                                 a percentage point rounded upwards (e.g.,
                                 9.876545% (or .09876545) would be rounded to
                                 9.87655% (or .0987655)), and all dollar
                                 amounts used in or resulting from such
                                 calculation except for the Basket Value will
                                 be rounded to the nearest one hundredth of a
                                 cent with five one thousandths of a cent
                                 being rounded upwards (e.g., $.09875 would be
                                 rounded to $.0988).  The Basket Value will be
                                 rounded up to the nearest  cent with one-
                                 half cent being rounded upwards.

Risk Factors..................   An investment in the Notes entails
                                 significant risks not associated with similar
                                 investments in a conventional debt security,
                                 including the following:

                                 The yield to maturity is less than would be
                                 payable on a non-exchangeable debt security
                                 if the Company were to issue such a security
                                 at the same time it issues the Notes.

                                 There can be no assurance as to how the Notes
                                 will trade in the secondary market or whether
                                 such market will be liquid or illiquid.  The
                                 market value for the Notes will be affected
                                 by a number of factors independent of the
                                 creditworthiness of the Company and the value
                                 of the Basket Stocks, including, but not
                                 limited to, the volatility of the Basket
                                 Stocks, the dividend rate on the Basket
                                 Stocks, market interest and yield rates and
                                 the time remaining to the first Exchange
                                 Date, any Call Date or the maturity of the
                                 Notes.  In addition, the value of the Basket
                                 Stocks depends on a number of interrelated
                                 factors, including economic, financial and
                                 political events, over which the Company has
                                 no control.  The market value of the Notes is
                                 expected to depend primarily on the extent of
                                 the appreciation, if any, of the Market
                                 Prices of the Basket Stocks above the Initial
                                 Market Price.  The price at which a holder
                                 will be able to sell Notes prior to maturity
                                 may be at a discount, which could be
                                 substantial, from the accreted principal
                                 amount thereof, if, at such time, the Market
                                 Prices of the Basket Stocks are below, equal
                                 to or not sufficiently above the Initial
                                 Market Price.  The historical Market Prices
                                 of the Basket Stocks should not be taken as
                                 an indication of the Basket Stocks' future
                                 performance during the term of any Note.

                                 The Company is not affiliated with any of the
                                 issuers of the Basket Stocks and, although
                                 the Company as of the date of this Pricing
                                 Supplement does not have any material
                                 non-public information concerning any of the
                                 issuers of the Basket Stocks, corporate events
                                 of any of the issuers of the Basket Stocks,
                                 including those described below in
                                 "Adjustments to the Exchange Ratios and the
                                 Basket," are beyond the Company's ability to
                                 control and are difficult to predict.

                                 None of the issuers of the Basket Stocks are
                                 involved in the offering of the Notes and
                                 have any obligations with respect to the
                                 Notes, including any obligation to take the
                                 interests of the Company or of holders of
                                 Notes into consideration for any reason.
                                 None of the issuers of the Basket Stocks will
                                 receive any of the proceeds of the offering
                                 of the Notes made hereby and are responsible
                                 for, and have participated in, the
                                 determination of the timing of, prices for or
                                 quantities of, the Notes offered hereby.

                                 Because the Calculation Agent is an affiliate
                                 of the Company, potential conflicts of
                                 interest may exist between the Calculation
                                 Agent and the holders of the Notes, including
                                 with respect to certain adjustments to the
                                 Exchange Ratios that may influence the
                                 determination of the Basket Value or of the
                                 amount of stock or cash receivable upon
                                 exercise of the Exchange Right or the Company
                                 Exchange Right.  See "Adjustments to the
                                 Exchange Ratios and the Basket" and "Market
                                 Disruption Event."

                                 It is suggested that prospective investors
                                 who consider purchasing the Notes should
                                 reach an investment decision only after
                                 carefully considering the suitability of the
                                 Notes in light of their particular
                                 circumstances.

                                 Investors should also consider the tax
                                 consequences of investing in the Notes.  See
                                 "United States Federal Taxation" below.


Adjustments to the Exchange
Ratios and the Basket.........   The Exchange Ratio with respect to any Basket
                                 Stock and the Basket will be adjusted as
                                 follows:

                                 1. If a Basket Stock is subject to a stock
                                 split or reverse stock split, then once such
                                 split has become effective, the Exchange Ratio
                                 applicable to such Basket Stock will be
                                 adjusted to equal the product of the number
                                 of shares issued with respect to one share of
                                 such Basket Stock and the prior Exchange
                                 Ratio.

                                 2. If a Basket Stock is subject to a stock
                                 dividend (issuance of additional shares of
                                 the Basket Stock) that is given ratably to all
                                 holders of shares of such Basket Stock, then
                                 once the dividend has become effective and
                                 such Basket Stock is trading ex-dividend, the
                                 Exchange Ratio applicable to such Basket
                                 Stock will be adjusted so that the new
                                 Exchange Ratio shall equal the former
                                 Exchange Ratio plus the product of (i) the
                                 number of shares of such Basket Stock issued
                                 with respect to one share of such Basket
                                 Stock and (ii) the prior Exchange Ratio.

                                 3. There will be no adjustments to the
                                 Exchange Ratios to reflect cash dividends or
                                 other distributions paid with respect to a
                                 Basket Stock other than distributions
                                 described in paragraph 6 below and
                                 Extraordinary Dividends as described below. A
                                 cash dividend or other distribution with
                                 respect to a Basket Stock will be deemed to be
                                 an "Extraordinary Dividend" if such dividend
                                 or other distribution exceeds the immediately
                                 preceding non-Extraordinary Dividend for such
                                 Basket Stock by an amount equal to at least
                                 10% of the Market Price of such Basket Stock
                                 on the Trading Day preceding the ex- dividend
                                 date for the payment of such Extraordinary
                                 Dividend (the "ex-dividend date").  If an
                                 Extraordinary Dividend occurs with respect to
                                 a Basket Stock, the Exchange Ratio with
                                 respect to such Basket Stock will be adjusted
                                 on the ex-dividend date with respect to such
                                 Extraordinary Dividend so that the new
                                 Exchange Ratio will equal the product of (i)
                                 the then current Exchange Ratio, and (ii) a
                                 fraction, the numerator of which is the Market
                                 Price on the Trading Day preceding the
                                 ex-dividend date, and the denominator of which
                                 is the amount by which the Market Price on the
                                 Trading Day preceding the ex-dividend date
                                 exceeds the Extraordinary Dividend Amount.
                                 The "Extraordinary Dividend Amount" with
                                 respect to an Extraordinary Dividend for a
                                 Basket Stock will equal (i) in the case of
                                 cash dividends or other distributions that
                                 constitute quarterly dividends, the amount per
                                 share of such Extraordinary Dividend minus the
                                 amount per share of the immediately preceding
                                 non- Extraordinary Dividend for such Basket
                                 Stock or (ii) in the case of cash dividends or
                                 other distributions that do not constitute
                                 quarterly dividends, the amount per share of
                                 such Extraordinary Dividend.  To the extent an
                                 Extraordinary Dividend is not paid in cash,
                                 the value of the non-cash component will be
                                 determined by the Calculation Agent, whose
                                 determination shall be conclusive.  A
                                 Distribution on a Basket Stock described in
                                 paragraph 6 below that also constitutes an
                                 Extraordinary Dividend shall only cause an
                                 adjustment to the Exchange Ratio for such
                                 Basket Stock pursuant to paragraph 6.

                                 4. If the issuer of a Basket Stock is being
                                 liquidated or is subject to a proceeding
                                 under any applicable bankruptcy, insolvency
                                 or other similar law, such Basket Stock will
                                 continue to be included in the Basket so long
                                 as a Market Price for such Basket Stock is
                                 available.  If a Market Price is no longer
                                 available for a Basket Stock for whatever
                                 reason, including the liquidation of the
                                 issuer of such Basket Stock or the subjection
                                 of the issuer of such Basket Stock to a
                                 proceeding under any applicable bankruptcy,
                                 insolvency or other similar law, then the
                                 value of such Basket Stock will equal zero in
                                 connection with the calculation of the Basket
                                 Value for so long as no Market Price is
                                 available, and no attempt will be made to
                                 find a replacement stock or increase the
                                 Basket Value to compensate for the deletion
                                 of such Basket Stock.

                                 5. If there occurs any reclassification or
                                 change of a Basket Stock, or if an issuer of
                                 a Basket Stock has been subject to a merger,
                                 combination or consolidation and is not the
                                 surviving entity, or if there occurs a sale
                                 or conveyance to another corporation of the
                                 property and assets of any of the issuers of
                                 Basket Stocks as an entirety or substantially
                                 as an entirety, in each case as a result of
                                 which the holders of a Basket Stock shall be
                                 entitled to receive stock, other securities
                                 or other property or assets (including cash)
                                 with respect to or in exchange for such
                                 Basket Stock, then the holders of the Notes
                                 then outstanding will be entitled thereafter
                                 to exchange such Notes into the kind and
                                 amount of shares of stock, other securities
                                 or other property or assets that they would
                                 have owned or been entitled to receive upon
                                 such reclassification, change, merger,
                                 combination, consolidation, sale or
                                 conveyance had such holders exchanged such
                                 Notes for Basket Stock immediately prior to
                                 any such corporate event.  At such time, no
                                 adjustment will be made to the Exchange Ratio.

                                 6. If the issuer of a Basket Stock issues to
                                 all of its shareholders equity securities of
                                 an issuer other than the issuer of the Basket
                                 Stock (other than in a transaction described
                                 in paragraph 5 above), then such new equity
                                 securities will be added to the Basket as a
                                 new Basket Stock, unless the Market Price of
                                 such new equity securities cannot be
                                 determined using the procedures described
                                 above under "Market Price."  The Exchange
                                 Ratio for such new Basket Stock will equal
                                 the product of the original Exchange Ratio
                                 for the Basket Stock for which the new Basket
                                 Stock is being issued (the "Initial Basket
                                 Stock") and the number of shares of the new
                                 Basket Stock issued with respect to one share
                                 of the Initial Basket Stock.

                                 No adjustments to any Exchange Ratio will be
                                 required unless such adjustment would require
                                 a change of at least 0.1% in the Exchange
                                 Ratio then in effect.  The Exchange Ratio
                                 resulting from any of the adjustments
                                 specified above will be rounded to the
                                 nearest one thousandth with five
                                 ten-thousandths being rounded upward.

                                 No adjustments to any Exchange Ratio will be
                                 made other than those specified above.  The
                                 adjustments specified above do not cover all
                                 events that could affect the Market Price of
                                 a Basket Stock.

                                 The Calculation Agent shall be solely
                                 responsible for the determination and
                                 calculation of any adjustments to the Exchange
                                 Ratios and of any related determinations and
                                 calculations with respect to any
                                 distributions of stock, other securities or
                                 other property or assets (including cash) in
                                 connection with any corporate event described
                                 in paragraph 5 or 6 above, and its
                                 determinations and calculations with respect
                                 thereto shall be conclusive.

                                 The Calculation Agent will provide
                                 information as to any adjustments to the
                                 Exchange Ratios upon written request by any
                                 holder of the Notes.

Market Disruption Event.......   "Market Disruption Event" means, with respect
                                 to any Basket Stock:

                                    (i) a suspension, absence or material
                                    limitation of trading of such Basket Stock
                                    on the primary market for such Basket Stock
                                    for more than two hours of trading or
                                    during the one-half hour period preceding
                                    the close of trading in such market; or the
                                    suspension, absence or material limitation
                                    on the primary market for trading in
                                    options contracts related to such Basket
                                    Stock, if available, during the one-half
                                    hour period preceding the close of trading
                                    in the applicable market, in each case as
                                    determined by the Calculation Agent in its
                                    sole discretion; and

                                    (ii) a determination by the Calculation
                                    Agent in its sole discretion that the
                                    event described in clause (i) above
                                    materially interfered with the ability of
                                    the Company or any of its affiliates to
                                    unwind all or a material portion of the
                                    hedge with respect to the Notes.

                                    For purposes of determining whether a
                                    Market Disruption Event has occurred:  (1)
                                    a limitation on the hours or number of
                                    days of trading will not constitute a
                                    Market Disruption Event if it results from
                                    an announced change in the regular
                                    business hours of the relevant exchange,
                                    (2) a decision to permanently discontinue
                                    trading in the relevant contract will not
                                    constitute a Market Disruption Event, (3)
                                    limitations pursuant to New York Stock
                                    Exchange Rule 80A (or any applicable rule
                                    or regulation enacted or promulgated by
                                    the New York Stock Exchange, any other
                                    self-regulatory organization or the
                                    Securities and Exchange Commission of
                                    similar scope as determined by the
                                    Calculation Agent) on trading during
                                    significant market fluctuations will
                                    constitute a suspension or material
                                    limitation of trading (4) a suspension of
                                    trading in an options contract on any
                                    Basket Stock by the primary securities
                                    market for trading in such options, if
                                    available, by reason of (x) a price change
                                    exceeding limits set by such securities
                                    exchange or market, (y) an imbalance of
                                    orders relating to such contracts or (z) a
                                    disparity in bid and ask quotes relating
                                    to such contracts will constitute a
                                    suspension or material limitation of
                                    trading in options contracts related to
                                    such Basket Stock and (5) a "suspension,
                                    absence or material limitation of trading"
                                    on the primary securities market on which
                                    options contracts related to such Basket
                                    Stock are traded will not include any time
                                    when such securities market is itself
                                    closed for trading under ordinary
                                    circumstances.

Alternate Exchange
Calculation in case
of an Event of Default........   In case an Event of Default with respect to
                                 the Notes shall have occurred and be
                                 continuing, the amount declared due and
                                 payable upon any acceleration of any Note
                                 shall be determined by MS & Co, as
                                 Calculation Agent, and shall be equal to the
                                 Issue Price of a Note and any accrued
                                 interest at the Stated Coupon Rate to but not
                                 including the date of acceleration; provided
                                 that if (x) the holder of a Note has
                                 submitted an Official Notice of Exchange to
                                 the Issuer in accordance with the Exchange
                                 Right or (y) the Issuer has called the Notes,
                                 other than a call for cash, in accordance
                                 with the Company Exchange Right, the amount
                                 declared  due and payable upon any such
                                 acceleration shall be an amount in cash for
                                 each $1,000 principal amount of a Note equal
                                 to the Basket Value, determined by the
                                 Calculation Agent as of the Exchange Date or
                                 as of the date of acceleration, respectively,
                                 and shall not include any accrued and unpaid
                                 interest thereon; provided further that if
                                 the Issuer has called the Notes for cash in
                                 an amount equal to the Call Price, in
                                 accordance with the Company Exchange Right,
                                 the amount declared due and payable upon any
                                 such acceleration shall be an amount in cash
                                 for each $1,000 principal amount of a Note
                                 equal to the Call Price.  See "Call Price"
                                 above.

Basket Stocks;
Public Information............   Each of the six issuers of Basket Stocks is
                                 registered under the Exchange Act.  Companies
                                 with securities registered under the Exchange
                                 Act are required to file periodically certain
                                 financial and other information specified by
                                 the Securities and Exchange Commission (the
                                 "Commission").  Information provided to or
                                 filed with the Commission can be inspected
                                 and copied at the public reference facilities
                                 maintained by the Commission at Room 1024,
                                 450 Fifth Street, N.W., Washington, D.C.
                                 20549 or at its Regional Offices located at
                                 Suite 1400, Citicorp Center, 500 West Madison
                                 Street, Chicago, Illinois 60661 and at Seven
                                 World Trade Center, 13th Floor, New York, New
                                 York 10048, and copies of such material can
                                 be obtained from the Public Reference Section
                                 of the Commission, 450 Fifth Street, N.W.,
                                 Washington, D.C. 20549, at prescribed rates.
                                 In addition, information provided to or filed
                                 with the Commission electronically can be
                                 accessed through a Website maintained by the
                                 Commission.  The address of the Commission's
                                 Website is http:/www.sec.gov.  Information
                                 provided to or filed with the Commission by
                                 each of the issuers pursuant to the Exchange
                                 Act of 1934 can be located by reference to
                                 its respective Commission file number.  In
                                 addition, information regarding each of the
                                 issuers may be obtained from other sources
                                 including, but not limited to, press
                                 releases, newspaper articles and other
                                 publicly disseminated documents.  The Company
                                 makes no representation or warranty as to the
                                 accuracy or completeness of such reports.

                                 Ascend develops, manufactures and sells wide
                                 area networking solutions for
                                 telecommunications carriers, internet service
                                 providers and corporation customers
                                 worldwide, and its Commission file number is
                                 0-23774.

                                 Ericsson provides advanced systems and
                                 products for wired and mobile
                                 telecommunications in public and private
                                 networks, and its Commission file number is
                                 0-12033.

                                 Lucent designs, develops, manufactures and
                                 services systems and software which enable
                                 network operators to provide wireline and
                                 wireless access, local, long distance and
                                 international voice, data and video services
                                 and cable television service, and its
                                 Commission file number is 1-11639.

                                 Nokia is a leading international supplier of
                                 telecommunications systems and equipment, and
                                 its Commission file number is 1-13202.

                                 Tellabs designs, manufactures, markets and
                                 services voice, data and video transport and
                                 network access systems that are used
                                 worldwide, and its Commission file number is
                                 0-9692.

                                 WorldCom is one of the largest long distance
                                 telecommunications companies in the United
                                 States and its Commission file number is
                                 0-11258.

                                 THIS PRICING SUPPLEMENT RELATES ONLY TO THE
                                 NOTES OFFERED HEREBY AND DOES NOT RELATE TO
                                 THE BASKET STOCKS OR OTHER SECURITIES OF THE
                                 ISSUERS OF THE BASKET STOCKS.  ALL DISCLOSURES
                                 CONTAINED IN THIS PRICING SUPPLEMENT
                                 REGARDING ANY OF THE ISSUERS OF THE BASKET
                                 STOCKS ARE DERIVED FROM THE PUBLICLY
                                 AVAILABLE DOCUMENTS DESCRIBED IN THE
                                 PRECEDING PARAGRAPH.  NEITHER THE COMPANY NOR
                                 THE AGENT HAS PARTICIPATED IN THE PREPARATION
                                 OF SUCH DOCUMENTS OR MADE ANY DUE DILIGENCE
                                 INQUIRY WITH RESPECT TO ANY OF THE ISSUERS OF
                                 THE BASKET STOCKS IN CONNECTION WITH THE
                                 OFFERING OF THE NOTES.  NEITHER THE COMPANY
                                 NOR THE AGENT MAKES ANY REPRESENTATION THAT
                                 SUCH PUBLICLY AVAILABLE DOCUMENTS OR ANY
                                 OTHER PUBLICLY AVAILABLE INFORMATION
                                 REGARDING ANY OF THE ISSUERS OF THE BASKET
                                 STOCKS ARE ACCURATE OR COMPLETE.
                                 FURTHERMORE, THERE CAN BE NO ASSURANCE THAT
                                 ALL EVENTS OCCURRING PRIOR TO THE DATE HEREOF
                                 (INCLUDING EVENTS THAT WOULD AFFECT THE
                                 ACCURACY OR COMPLETENESS OF THE PUBLICLY
                                 AVAILABLE DOCUMENTS DESCRIBED IN THE
                                 PRECEDING PARAGRAPH) THAT WOULD AFFECT THE
                                 TRADING PRICES OF THE BASKET STOCKS (AND
                                 THEREFORE THE INITIAL MARKET PRICES AND THE
                                 EXCHANGE RATIOS) HAVE BEEN PUBLICLY
                                 DISCLOSED.  SUBSEQUENT DISCLOSURE OF ANY SUCH
                                 EVENTS OR THE DISCLOSURE OF OR FAILURE TO
                                 DISCLOSE MATERIAL FUTURE EVENTS CONCERNING
                                 ANY OF THE ISSUERS OF THE BASKET STOCKS COULD
                                 AFFECT THE VALUE RECEIVED ON ANY EXCHANGE
                                 DATE OR CALL DATE WITH RESPECT TO THE NOTES
                                 AND THEREFORE THE TRADING PRICES OF THE NOTES.

                                 NEITHER THE COMPANY NOR ANY OF ITS AFFILIATES
                                 MAKES ANY REPRESENTATION TO ANY PURCHASER OF
                                 NOTES AS TO THE PERFORMANCE OF THE BASKET
                                 STOCKS.

                                 The Company or its affiliates may presently
                                 or from time to time engage in business with
                                 one or more of the issuers of the Basket
                                 Stocks including extending loans to, or
                                 making equity investments in, one or more of
                                 the issuers of the Basket Stocks or providing
                                 advisory services to one or more of the
                                 issuers of the Basket Stocks, including
                                 merger and acquisition advisory services.  In
                                 the course of such business, the Company or
                                 its affiliates may acquire non-public
                                 information with respect to one or more of
                                 the issuers of the Basket Stocks and, in
                                 addition, one or more affiliates of the
                                 Company may publish research reports with
                                 respect to one or more of the issuers of the
                                 Basket Stocks.  The statement in the
                                 preceding sentence is not intended to affect
                                 the rights of holders of the Notes under the
                                 securities laws.  Any prospective purchaser
                                 of a Note should undertake an independent
                                 investigation of the issuers of the Basket
                                 Stocks as in its judgment is appropriate to
                                 make an informed decision with respect to an
                                 investment in the Basket Stocks.

Historical Information........   The following table sets forth the high and
                                 low Market Prices of each Basket Stock during
                                 1995, 1996, 1997 and during 1998 through
                                 March 31, 1998.  The Market Price of each
                                 Basket Stock on March 31, 1998 is set forth
                                 in the table under "Basket Stocks" above. The
                                 Market Prices listed below were obtained from
                                 Bloomberg Financial Markets.  The Company
                                 believes all such information to be accurate.
                                 The historical prices of the Basket Stocks
                                 should not be taken as an indication of
                                 future performance, and no assurance can be
                                 given that the price of the Basket Stocks
                                 will increase sufficiently to cause the
                                 beneficial owners of the Notes to receive an
                                 amount in excess of the principal amount on
                                 any Exchange Date or Call Date.

<TABLE>
                                                          Dividends
Ascend                            High          Low       per Share
- ------                            ----          ---       ---------
<S>                              <C>           <C>        <C>
(CUSIP # 043491109)
1995
  First Quarter........          12 3/16       9 1/8          --
  Second Quarter.......          12 7/16       7 7/8          --
  Third Quarter........          11 1/8        8 5/16         --
  Fourth Quarter.......           9 1/4        5 11/16        --
1996
  First Quarter........               9        5 7/16         --
  Second Quarter.......           9 1/14       6 1/2          --
  Third Quarter........           7 3/16           5          --
  Fourth Quarter.......           7 5/16       5 3/8          --
1997
  First Quarter........           7 5/16       5 1/16         --
  Second Quarter.......           6 1/2        5 1/4          --
  Third Quarter........          31 5/8        5 7/8          --
  Fourth Quarter.......          26 7/16      16 3/8          --
1998
  First Quarter........          24 3/4       12 5/16         --
</TABLE>


                                 Historical prices have been adjusted for
                                 three 2 for 1 stock splits of Ascend stock,
                                 which became effective in the second quarter
                                 of 1995, the third quarter of 1995 and the
                                 fourth quarter of 1995, respectively.

<TABLE>

                                                          Dividends
Ericsson                           High         Low       per Share
- --------                           ----         ----      ---------
<S>                              <C>          <C>         <C>
(CUSIP # 294821400)
1995
  First Quarter........          15 11/64     12 59/64        --
  Second Quarter.......          19 13/64     15 1/32      $0.1776
  Third Quarter........          24 23/32     17 49/64        --
  Fourth Quarter.......          23 7/8       18              --
1996
  First Quarter........          23           18 1/4          --
  Second Quarter.......          23 3/16      18 5/8       $0.2554
  Third Quarter........          25 9/16      18 13/16        --
  Fourth Quarter.......          31 1/2       25 1/2          --
1997
  First Quarter........          36           29 3/4          --
  Second Quarter.......          40 1/2       29 9/16      $0.324
  Third Quarter........          48 3/16      38 9/16         --
  Fourth Quarter.......          49 15/16     34 11/16        --
1998
  First Quarter........          48 3/8       34 13/16        --
</TABLE>

                                 Historical prices have been adjusted for one
                                 4 for 1 stock split of Ericsson stock, which
                                 became effective in the second quarter of
                                 1995, and for a rights issuance in the fourth
                                 quarter of 1995 whereby one right was issued
                                 for each American depositary receipt ("ADR")
                                 held and each right entitled the holder to
                                 purchase one ADR for 90 Swedish Krona.

<TABLE>
                                                           Dividends
Lucent                             High          Low       per Share
- ------                             ----          ---       ---------
<S>                               <C>           <C>        <C>
(CUSIP # 549463107)
1996
  Second Quarter.......           39 1/8        30 5/8        --
  Third Quarter........           45 7/8        33 7/8      $0.075
  Fourth Quarter.......           52 1/2        43          $0.075
1997
  First Quarter........           59 5/8        45 1/4      $0.075
  Second Quarter.......           73 1/8        50 1/4      $0.075
  Third Quarter........           88 11/16      73 7/16     $0.075
  Fourth Quarter.......           89            72 15/16    $0.075
1998
  First Quarter........          127 7/8        74 3/4      $0.075
</TABLE>

                                 Lucent made an intial public offering of its
                                 stock on April 4, 1996. Historical prices
                                 have been adjusted for one 2 for 1 stock
                                 split of Lucent stock which became effective
                                 in the first quarter of 1998.

<TABLE>
                                                            Dividends
Nokia                               High          Low       per Share
- -----                               ----          ---       ---------
<S>                               <C>           <C>         <C>
(CUSIP # 654902204)
1995
  First Quarter........           40 11/16      35 9/16        --
  Second Quarter.......           60 3/8        36 15/16    $0.5823
  Third Quarter........           76 3/8        59 1/2         --
  Fourth Quarter.......           68 7/8        32 3/4         --
1996
  First Quarter........           40            34             --
  Second Quarter.......           43 1/2        31 3/4      $0.6330
  Third Quarter........           45            32 3/4         --
  Fourth Quarter.......           58 3/4        44             --
1997
  First Quarter........           67 1/8        56 1/2         --
  Second Quarter.......           75 5/16       56 1/8      $0.6866
  Third Quarter........           93 13/16      72 3/4         --
  Fourth Quarter.......          101 3/4        64 1/2         --
1998
  First Quarter........          108            68 1/8         --
</TABLE>


                                 Historical prices have been adjusted for one
                                 2 for 1 stock split of Nokia stock, which
                                 became effective in the second quarter of
                                 1995.

<TABLE>
                                                            Dividends
Tellabs                            High           Low       per Share
- -------                            ----           ---       ---------
<S>                               <C>           <C>         <C>
(CUSIP # 879664100)
1995
  First Quarter........           15 3/4        11 31/32       --
  Second Quarter.......           24 1/16       14 3/16        --
  Third Quarter........           25 1/2        20 1/2         --
  Fourth Quarter.......           21            15 1/2         --
1996
  First Quarter........           25 7/8        16 1/2         --
  Second Quarter.......           33 7/16       24 1/4         --
  Third Quarter........           37 1/2        26 3/8         --
  Fourth Quarter.......           45 1/4        34 7/16        --
1997
  First Quarter........           45 7/8        34 1/8         --
  Second Quarter.......           57 7/16       34             --
  Third Quarter........           63            51 1/2         --
  Fourth Quarter.......           58 5/8        45 1/8         --
1998
  First Quarter........           68 3/4        45 13/16       --
</TABLE>

                                 Historical prices have been adjusted for two
                                 2 for 1 stock splits of Tellabs stock, which
                                 became effective in the second quarter of 1995
                                 and the fourth quarter of 1996, respectively.

<TABLE>
                                                           Dividends
WorldCom                           High           Low      per Share
- --------                           ----           ---      ---------
<S>                               <C>           <C>        <C>
(CUSIP # 879664100)
1995
  First Quarter........           12 7/8         9 11/16       --
  Second Quarter.......           13 5/8        11 11/16       --
  Third Quarter........           16 15/16      13 1/2         --
  Fourth Quarter.......           17 5/8        15 5/32        --
1996
  First Quarter........           23            16 1/2         --
  Second Quarter.......           27 11/16      21 3/4         --
  Third Quarter........           28            18 5/8         --
  Fourth Quarter.......           26 1/16       21 5/8         --
1997
  First Quarter........           27 1/2        22             --
  Second Quarter.......           32            21 7/8         --
  Third Quarter........           37            29 15/16       --
  Fourth Quarter.......           38 1/16       28 15/16       --
1998
  First Quarter........           44 7/16       28 13/16       --

</TABLE>

                                 Historical prices have been adjusted for one
                                 2 for 1 stock split of WorldCom stock which
                                 became effective in the second quarter of
                                 1996.


                                 The Company makes no representation as to the
                                 amount of dividends, if any, that any of the
                                 issuers of the Basket Stocks will pay in the
                                 future.  In any event, holders of the Notes
                                 will not be entitled to receive dividends, if
                                 any, that may be payable on the Basket Stocks.

Use of Proceeds and Hedging...   The net proceeds to be received by the
                                 Company from the sale of the Notes will be
                                 used for general corporate purposes and, in
                                 part, by the Company or one or more of its
                                 affiliates in connection with hedging the
                                 Company's obligations under the Notes.  See
                                 also "Use of Proceeds" in the accompanying
                                 Prospectus.

                                 On the date of this Pricing Supplement, the
                                 Company, through its subsidiaries and others,
                                 hedged its anticipated exposure in connection
                                 with the Notes by taking positions in the
                                 Basket Stocks and other instruments in
                                 connection with such hedging.  Such hedging
                                 was carried out in a manner designed to
                                 minimize any impact on the prices of the
                                 Basket Stocks.  Purchase activity could
                                 potentially have increased the prices of the
                                 Basket Stocks, and therefore effectively have
                                 increased the levels to which the Basket
                                 Stocks must rise before a holder of a Note
                                 would receive more than the accreted principal
                                 amount on any Exchange Date or Call Date.
                                 Although the Company has no reason to believe
                                 that its hedging activity had a material
                                 impact on the prices of the Basket Stocks or
                                 such options, there can be no assurance that
                                 the Company did not, or in the future will
                                 not, affect such prices as a result of its
                                 hedging activities.  The Company, through its
                                 subsidiaries, is likely to modify its hedge
                                 positions throughout the life of the Notes by
                                 purchasing and selling the Basket Stocks,
                                 options contracts on the Basket Stocks listed
                                 on major securities markets or positions in
                                 any other instruments that it may wish to use
                                 in connection with such hedging.

United States Federal
Taxation......................   The Notes are Optionally Exchangeable Notes
                                 and investors should refer to the discussion
                                 under "United States Federal
                                 Taxation--Notes--Optionally Exchangeable
                                 Notes" in the accompanying Prospectus
                                 Supplement.  In connection with the
                                 discussion thereunder, the Company has
                                 determined that the "comparable yield" is an
                                 annual rate of 6.1%, compounded semi-
                                 annually.  Based on the Company's
                                 determination of the comparable yield, the
                                 "projected payment schedule" for a Note
                                 (assuming a par amount of $1,000 or with
                                 respect to each integral multiple thereof)
                                 consists of the semi-annual coupon payments
                                 and an additional projected amount due at
                                 maturity, equal to $1,443,89.

                                 THE COMPARABLE YIELD AND THE PROJECTED
                                 PAYMENT SCHEDULE ARE NOT PROVIDED FOR ANY
                                 PURPOSE OTHER THAN THE DETERMINATION OF
                                 UNITED STATES HOLDERS' INTEREST ACCRUALS AND
                                 ADJUSTMENTS THEREOF IN RESPECT OF THE NOTES
                                 AND DO NOT CONSTITUTE A REPRESENTATION
                                 REGARDING THE ACTUAL AMOUNTS OF THE PAYMENTS
                                 ON A NOTE.


                                                                       ANNEX A

                          OFFICIAL NOTICE OF EXCHANGE

                                            Dated:  [On or after July 6, 1998]

Morgan Stanley Dean Witter & Co.
1585 Broadway
New York, New York 10036

Morgan Stanley & Co. Incorporated, as
  Calculation Agent
1585 Broadway
New York, New York 10036
Fax No.: (212) 761-0674
(Attn: Lily Lam)

Dear Sirs:

               The undersigned holder of the Medium Term Notes, Series C,
Senior Fixed Rate Notes due April 15, 2005 (Exchangeable for Shares of Common
Stock of Six Telecommunications Corporations (the "Basket Stocks")) of Morgan
Stanley Dean Witter & Co.  (the "Notes") hereby irrevocably elects to exercise
with respect to the principal amount of the Notes indicated below, as of the
date hereof (or, if this letter is received after 11:00 a.m. on any Trading
Day, as of the next Trading Day), provided that such day is prior to the
earliest of (i) April 14, 2005, (ii) the Call Date and (iii) in the event of a
call for cash, the Company Notice Date, the Exchange Right as described in
Pricing Supplement No. 4 dated March 31, 1998 (the "Pricing Supplement") to
the Prospectus Supplement dated March 26, 1998 and the Prospectus dated March
26, 1998 related to Registration Statement No. 333-46935.  Capitalized terms
not defined herein have the meanings given to such terms in the Pricing
Supplement.  Please date and acknowledge receipt of this notice in the place
provided below on the date of receipt, and fax a copy to the fax number
indicated, whereupon the Company will deliver, at its sole option, shares of
the Basket Stocks or cash 3 Business Days after the Exchange Date in
accordance with the terms of the Notes, as described in the Pricing Supplement.

                                        Very truly yours,


                                        _______________________________________
                                        [Name of Holder]


                                        By:____________________________________
                                        [Title]


                                        _______________________________________
                                        [Fax No.]


                                        $_______________________________________
                                        Principal Amount of Notes surrendered
                                        for exchange
Receipt of the above Official
Notice of Exchange is hereby acknowledged

MORGAN STANLEY DEAN WITTER & CO., as Issuer

MORGAN STANLEY & CO. INCORPORATED, as Calculation Agent

By MORGAN STANLEY & CO. INCORPORATED, as Calculation Agent


By:____________________________________
       Title:

Date and time of acknowledgment________


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