MORGAN STANLEY DEAN WITTER & CO
424B3, 1999-07-07
FINANCE SERVICES
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PROSPECTUS Dated May 5, 1999                      Pricing Supplement No. 15 to
PROSPECTUS SUPPLEMENT                     Registration Statement No. 333-75289
Dated May 6, 1999                                          Dated June 30, 1999
                                                                Rule 424(b)(3)

                                  $10,550,000
                        Morgan Stanley Dean Witter & Co.
                          MEDIUM-TERM NOTES, SERIES D


                     EQUITY-LINKED NOTES DUE JULY 15, 2002
                       based on the Nikkei Stock Average


Each note will pay 100% of its principal amount of $1,000 at maturity.  The
notes will also pay a supplemental redemption amount, which may be zero.  The
supplemental redemption amount will be based on the percentage increase in
value, if any, over the life of the notes of the Nikkei Stock Average, which
we refer to as the Nikkei 225.  Your right to receive the supplemental
redemption amount is subject to our right to redeem (call) all of the notes at
established prices on July 31, 2000 and July 31, 2001.

o The issue price of each note is $1,000 (100% of the principal amount).

o We will not pay interest on the notes.

o At maturity, unless we have called the notes, you will receive the principal
  amount of $1,000 per note plus any supplemental redemption amount.

o The supplemental redemption amount is based on the percentage increase in
  value, if any, at maturity of the Nikkei 225.  If the value of the Nikkei 225
  at the maturity of the notes is higher than 17,529.74, which is the value of
  the Nikkei 225 on June 30, 1999, the date we offered the notes for initial
  sale to the public, then you will receive a supplemental redemption amount per
  note equal to the percentage increase of the Nikkei 225 times $1,000.

o However, if the value of the Nikkei 225 at maturity is not higher than
  17,529.74, then you will not receive any supplemental redemption amount, but
  you will still  receive the principal amount of the notes.

o On July 31, 2000 and July 31, 2001, we can call all of the notes and pay you
  a predetermined call price.  The call price will be $1,225 on July 31, 2000
  and $1,275 on July 31, 2001. If we decide to call the notes on July 31, 2000,
  we will give you notice on any day commencing June 20, 2000 to and including
  June 30, 2000.  If we decide to call the notes on July 31, 2001, we will give
  you notice on any day commencing June 20, 2001 to and including June 30, 2001.
  If we call the notes, you will receive only the call price and will not be
  entitled to receive any supplemental redemption amount.

Investing in the notes is not equivalent to investing in the stocks included
in the Nikkei 225.

We will apply to the London Stock Exchange Limited for the notes to be
admitted to the Official List.

We will issue the notes in bearer form only.  You may not exchange notes in
bearer form at any time for notes in registered form.  Notes in bearer form
are subject to U.S. tax law requirements and you may not offer, sell, resell
or deliver the notes within the United States or its possessions or to a U.S.
person, except in certain transactions permitted by U.S. tax regulations.

You should read the more detailed description of the notes in this pricing
supplement.  In particular, you should review and understand the descriptions
in "Summary of Pricing Supplement" and "Description of Notes."

The notes involve risks not associated with an investment in conventional debt
securities.  See "Risk Factors" beginning on PS-6.

                                ---------------
                                  PRICE 100%
                                ---------------

                                          Agent's        Proceeds to
                   Price to Public      Commissions      the Company
                   ---------------      -----------      -----------
Per note......          100%               1.0%             99.0%
Total.........       $10,550,000         $105,500        $10,444,500

If you purchase at least $1,500,000 principal amount of the notes in any
single transaction, the price for these notes will be 99.00% of the issue
price.  In that case, the agent's commissions will be reduced to zero.



                          MORGAN STANLEY DEAN WITTER
<PAGE>



                     [This page intentionally left blank]



                                     PS-2
<PAGE>



                         SUMMARY OF PRICING SUPPLEMENT

     The following summary describes the notes we are offering to you in
general terms only. You should read the summary together with the more detailed
information that is contained in the rest of this pricing supplement and in the
accompanying prospectus and prospectus supplement. You should carefully
consider, among other things, the matters set forth in "Risk Factors."

     The notes offered are medium-term debt securities of Morgan Stanley Dean
Witter & Co. The return on the notes is linked to the performance of the Nikkei
Stock Average, which we refer to as the Nikkei 225. These notes combine
features of debt and equity by offering at maturity 100% protection of the
issue price with the opportunity to participate in the upside potential of the
underlying Nikkei 225. However, we may also call the notes prior to maturity.

<TABLE>
<S>                                     <C>
                                        The Notes
Each note costs $1,000                  We, Morgan Stanley Dean Witter & Co., are offering our Equity-Linked Notes
                                        due July 15, 2002 based on the Nikkei Stock Average.  The principal amount
                                        and issue price of each note is $1,000.  We will pay you at least the principal
                                        amount of $1,000 at maturity.

Payment at maturity                     Unlike ordinary debt securities, the notes do not pay interest.  Instead, you will
                                        receive the principal amount of $1,000 per note plus a supplemental redemption
                                        amount, if the value of the Nikkei 225 increases over the life of the notes.

                                                                     100% Principal Protection
                                        Unless we have called the notes, we will pay you at least $1,000 at maturity,
                                        plus the supplemental redemption amount, if any.

                                                                 The Supplemental Redemption Amount
                                        The supplemental redemption amount will be equal to the percentage increase
                                        of the Nikkei 225 multiplied by $1,000.  The supplemental redemption amount
                                        will be calculated as follows:

                                                            Final Index Value - Initial Index Value
                                        $1,000 x            ---------------------------------------
                                                                      Initial Index Value

                                        where,
                                        Initial Index Value = 17,529.74, which is the closing value of the
                                                              Nikkei 225 on June 30, 1999, the date we
                                                              offered the notes for initial sale to the public

                                        Final Index Value = the closing value of the Nikkei 225
                                                             on July 1, 2002

                                        However, if this amount is zero or less, we will not pay you a supplemental
                                        redemption amount.  In other words, if the Nikkei 225 does not go up over the
                                        life of the notes, you will not receive any supplemental redemption amount.

No coupon interest payments             We will not pay interest on the notes.


                                     PS-3
<PAGE>



Form of notes                           We will issue the notes in bearer form only.  You may not exchange notes in
                                        bearer form at any time for notes in registered form.  Notes in bearer form are
                                        subject to U.S. tax law requirements and you may not offer, sell, resell or
                                        deliver the notes within the United States or its possessions or to a U.S. person,
                                        except in certain transactions permitted by U.S. tax regulations.  You should
                                        review the discussion in the accompanying prospectus supplement under
                                        "Description of Notes -- Forms of Notes" and in the accompanying prospectus
                                        under "Forms of Securities -- Limitations on the Issuance of Bearer Securities
                                        and Bearer Debt Warrants."

Our Call Right                          On July 31, 2000 and July 31, 2001, we have the right to call all of the notes.
                                        The call price will be $1,225  on July 31, 2000 and $1,275 on July 31, 2001.  If
                                        we decide to call the notes, we will:

                                        o send a notice on any day commencing June 20, 2000 to and including June
                                          30, 2000 for the July 31, 2000 call date or commencing June 20, 2001 to
                                          and including June 30, 2001 for the July 31, 2001 call date, announcing
                                          that we have decided to call the notes;

                                        o specify in the notice the call price that we will pay to you in exchange for
                                          each note; and

                                        o specify in the notice the call date when you will receive the call price.

Nikkei 225 is currently                 The last reported value of the Nikkei 225, as published by Nihon Keizai
at 17,529.74                            Shimbun, Inc. was 17,529.74.  You can review the publicly reported closing
                                        values of the Nikkei 225 since 1994 in the "Historical Information" section of
                                        this Pricing Supplement.  The payment of dividends on the stocks which
                                        compose, or underlie, the Nikkei 225 is not reflected in the level of the Nikkei
                                        225 and, therefore, has no effect on our calculation of the percentage increase
                                        in the Nikkei 225.  The historical performance of the Nikkei 225 should not be
                                        taken as an indication of what its value will be at maturity.

The Calculation Agent                   We have appointed Morgan Stanley & Co. International Limited, which we
                                        refer to as MSIL, to act as calculation agent for The Chase Manhattan Bank
                                        (London Branch), the trustee for our senior notes.  As calculation agent, MSIL
                                        will determine the percentage change in the Nikkei 225, the final index value
                                        and the supplemental redemption amount.

No Affiliation with Nihon               Nihon Keizai Shimbun, Inc., the publisher of the Nikkei 225, is not an affiliate
Keizai Shimbun, Inc.                    of ours and is not involved with this offering in any way.  The obligations
                                        represented by these equity-linked notes are obligations of Morgan Stanley
                                        Dean Witter & Co. and not of Nihon Keizai Shimbun, Inc.

More information on                     The notes are senior notes issued as part of our Series D medium-term note
the notes                               program.  You can find a general description of our Series D medium-term note
                                        program in the accompanying prospectus supplement dated May 6, 1999.  We
                                        describe the basic features of this type of note in the sections called
                                        "Description of Notes -- Fixed Rate Notes" and " -- Notes Linked to
                                        Commodity Prices, Single Securities, Baskets of Securities or Indices."


                                     PS-4
<PAGE>



                                        Because this is a summary, it does not contain all of the information that
                                        may be important to you, including the specific mechanics and timing of
                                        the call provisions, the calculation of the final index value, the percentage
                                        change in the index and the supplemental redemption amount.  You
                                        should read the "Description of Notes" section in this pricing supplement
                                        for a detailed description of the terms of the notes.  You should also read
                                        about some of the risks involved in investing in notes in the section called
                                        "Risk Factors."  We urge you to consult with your investment, legal,
                                        accounting and other advisors with regard to any investment in the notes.

How to reach us                         You may contact us at our principal executive offices at 1585 Broadway, New
                                        York, New York 10036 (telephone number (212) 762-4000).
</TABLE>





                                     PS-5
<PAGE>



                                 RISK FACTORS

     The notes are not secured debt and unlike ordinary debt securities do not
pay interest. This section describes the most significant risks relating to the
notes. You should carefully consider whether the notes are suited to your
particular circumstances before you decide to purchase them.

<TABLE>
<S>                                      <C>
Notes are not ordinary                   The terms of the notes differ from those of ordinary debt securities in that we
senior notes                             will not pay interest on the notes.  Because the supplemental redemption amount
                                         due at maturity may be equal to zero, the return on your investment (the
                                         effective yield to maturity) in the notes may be less than the amount that would
                                         be paid on an ordinary debt security.  The return of only the principal amount of
                                         each note at maturity will not compensate you for any loss in value due to
                                         inflation and other factors relating to the value of money over time.

Notes may not                            If the percentage change in the Nikkei 225 is equal to or less than zero, you will
pay more than                            receive only the par amount of $1,000 for each note that you hold at maturity.
par at maturity

Secondary trading                        There may be little or no secondary market for the notes.  Although we will
may be limited                           apply to admit the notes to the Official List of the London Stock Exchange
                                         Limited, the secondary market may not provide enough liquidity to allow you to
                                         trade or sell the notes easily.

Market price of the notes                Several factors, many of which are beyond our control, will influence the value
influenced by many                       of the notes, including:
unpredictable factors
                                         o the value of the Nikkei 225

                                         o interest and yield rates in the market

                                         o the volatility (frequency and magnitude of changes in price) of the Nikkei
                                           225

                                         o economic, financial, political and regulatory or judicial events that affect
                                           the securities underlying the Nikkei 225 or stock markets generally and
                                           which may affect the final index value

                                         o the time remaining to the maturity of the notes

                                         o the dividend rate on the stocks underlying the Nikkei 225

                                         o our creditworthiness

                                         Some or all of these factors will influence the price that you will receive if you
                                         sell your notes prior to maturity.  For example, you may have to sell your notes
                                         at a substantial discount from the principal amount if at the time of sale the
                                         Nikkei 225 is at, below, or not sufficiently above the initial index value or if
                                         market interest rates rise.

                                         You cannot predict the future performance of the Nikkei 225 based on its
                                         historical performance.  We cannot guarantee that the value of the Nikkei 225
                                         will increase so that you will receive at maturity an amount in excess of the
                                         principal amount of the notes.

                                     PS-6
<PAGE>



Adjustments to the Nikkei                Nihon Keizai Shimbun, Inc., which we refer to as NIKKEI, is responsible for
225 could adversely affect               calculating and maintaining the Nikkei 225.  NIKKEI can add, delete or
the notes                                substitute the stocks underlying the Nikkei 225 or make other methodological
                                         changes that could change the value of the Nikkei 225.  NIKKEI may
                                         discontinue or suspend calculation or dissemination of the Nikkei 225.  Any of
                                         these actions could adversely affect the value of the notes.

Potential conflicts of                   As calculation agent, MSIL will calculate the amount paid to you at maturity of
interest between you                     the notes.  MSIL and other affiliates may carry out activities that minimize our
and the Calculation                      risks related to notes, including trading in the individual stocks included in the
Agent                                    Nikkei 225 as well as in other instruments related to the Nikkei 225.  MSIL and
                                         some of our other subsidiaries also trade the individual stocks included in the
                                         Nikkei 225 and other financial instruments related to the Nikkei 225 on a regular
                                         basis as part of their general broker-dealer businesses. Any of these activities
                                         could influence MSIL's determination of calculations made with respect to the
                                         notes and, accordingly, could affect your payout on the notes.

                                         Because MSIL calculates the percentage change in the Nikkei 225, the final
                                         index value and the supplemental redemption amount, potential conflicts of
                                         interest may exist between MSIL as calculation agent and you as an owner of
                                         the notes.

Investment in the notes                  The payment of dividends on the stocks which compose, or underlie, the Nikkei
not the same as an                       225 has no effect on the calculation of the percentage change in the Nikkei 225.
investment in the                        Therefore, the return on your investment based on the percentage change in the
Nikkei 225 stocks                        Nikkei 225 is not the same as the total return based on the purchase of those
                                         underlying stocks held for a similar period.

Potential risks of investing             An investment in the notes involves considerations that may not be associated
in a security linked to                  with a security linked to an index of stocks issued by companies organized in
foreign common stock                     your local jurisdiction.  These considerations relate to foreign market factors
                                         generally and may include, for example, different accounting requirements and
                                         regulations, different securities trading rules and conventions, different and in
                                         some cases more adverse economic environments, like the recession experienced
                                         by the Japanese economy and other Asian economies, and greater governmental
                                         involvement in the economy and, in some cases, greater volatility and
                                         unpredictability.

Tax treatment                            You should also consider the tax consequences of investing in the notes. Please
                                         read carefully the section "Description of Notes--United States Federal Taxation"
                                         in this pricing supplement.
</TABLE>


                                     PS-7
<PAGE>



                             DESCRIPTION OF NOTES

     Terms not defined herein have the meanings given to such terms in the
accompanying prospectus supplement. The term "Note" refers to each $1,000
principal amount of any of our Equity-Linked Notes due July 15, 2002 based on
the Nikkei Stock Average. In this pricing supplement, the terms "MSDW," "we,"
"us" and "our" refer to Morgan Stanley Dean Witter & Co.

Principal Amount..............   $10,550,000

Maturity Date.................   July 15, 2002

Interest Rate.................   We will not make periodic payments of
                                 interest on the Notes.

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

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

Original Issue Date
(Settlement Date).............   July 14, 1999

Common Code...................   9944818

ISIN..........................   XS0099448184

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

Maturity Redemption Amount....   At maturity (including as a result of
                                 acceleration or under the terms of the Senior
                                 Debt Indenture), you will receive $1,000, the
                                 par amount of each Note, plus the
                                 Supplemental Redemption Amount, if any.

Supplemental Redemption Amount   We will pay to you a Supplemental Redemption
                                 Amount per Note at maturity equal to the
                                 greater of (a) zero and (b) the product of
                                 $1,000 and the Nikkei 225 Percent Change.
                                 The Calculation Agent will calculate the
                                 Supplemental Redemption Amount on the date
                                 the Final Index Value is determined.

                                 The  Calculation Agent will provide written
                                 notice to the Trustee at its London office,
                                 on which notice the Trustee may conclusively
                                 rely, of the Supplemental Redemption Amount,
                                 on or prior to 11:00 a.m. on the Business Day
                                 preceding the Maturity Date.  See
                                 "Discontinuance of the Nikkei 225; Alteration
                                 of Method of Calculation" below.

                                 The Calculation Agent will round all
                                 percentages resulting from any calculation
                                 with respect to the Notes 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)). All dollar amounts used in or
                                 resulting from such calculation will be
                                 rounded to the nearest tenth of a cent with
                                 five tenths of a cent being rounded upwards.

                                     PS-8
<PAGE>



Nikkei 225 Percent Change.....   The Nikkei 225 Percent Change is a fraction,
                                 the numerator of which will be the Final
                                 Index Value less the Initial Index Value and
                                 the denominator of which will be the Initial
                                 Index Value.  The Nikkei 225 Percent Change
                                 is described by the following formula:

                                 (Final Index Value - Initial Index Value)
                                 -----------------------------------------
                                           Initial  Index Value

Initial Index Value...........   17,529.74

Final Index Value.............   The Final Index Value will be the Index
                                 Closing Value on July 1, 2002.

                                 If a Market Disruption Event occurs on July
                                 1, 2002 or if that day is not a Trading Day,
                                 the Final Index Value will be determined on
                                 the immediately succeeding Trading Day during
                                 which no Market Disruption Event occurs;
                                 provided that the Final Index Value will not
                                 be determined on a date later than the second
                                 scheduled Trading Day preceding the Maturity
                                 Date, and if such date is not a Trading Day,
                                 or if there is a Market Disruption Event on
                                 such date, the Calculation Agent will
                                 determine the value of the Nikkei 225 on such
                                 date in accordance with the formula for and
                                 method of calculating the Nikkei 225 in
                                 effect on the last Trading Day on which no
                                 Market Disruption Event occurred, using the
                                 closing price (or, if trading in the relevant
                                 securities has been materially suspended or
                                 materially limited, its good faith estimate
                                 of the closing price that would have
                                 prevailed but for such suspension or
                                 limitation) on such date of each security
                                 most recently constituting the Nikkei 225.

Index Closing Value...........   The Index Closing Value will equal the
                                 closing value (afternoon session) of the
                                 Nikkei 225, published by NIKKEI, on a
                                 specified date.  See "--Discontinuance of the
                                 Nikkei 225; Alteration of Method of
                                 Calculation."

                                 In this "Description of Notes," references to
                                 the Nikkei 225 will include any Successor
                                 Index, unless the context requires otherwise.

Call Right ...................   On July 31, 2000 or July 31, 2001, we may
                                 call the Notes, in whole but not in part, for
                                 mandatory exchange into cash at the applicable
                                 Call Price as described below.  We will not
                                 pay a Supplemental Redemption Amount to you
                                 if we call the Notes.  If we call the Notes,
                                 then the cash to be delivered to you will be
                                 delivered on the Call Date fixed by us and
                                 set forth in our call notice, upon delivery
                                 of your Notes to the Trustee in accordance
                                 with the delivery instructions.  We shall, or
                                 shall cause the Calculation Agent to, deliver
                                 the cash to the Trustee for delivery to you.

Notice Date...................   Any day commencing June 20, 2000 to and
                                 including June 30, 2000  for the July 31,
                                 2000 Call Date or commencing June 20, 2001 to
                                 and including June 30, 2001 for the July 31,
                                 2001 Call Date, on which we issue our call
                                 notice.

                                     PS-9
<PAGE>



Call Date.....................   July 31, 2000 or July 31, 2001, as specified
                                 by us in our call notice, on which date we
                                 will deliver the cash Call Price to you upon
                                 mandatory exchange of the Notes.

Call Price....................   The call price will be $1,225 on July 31,
                                 2000 and $1,275 on July 31, 2001.

Trading Day...................   A day, as determined by the Calculation
                                 Agent, on which trading is generally
                                 conducted (i) on the Tokyo Stock Exchange
                                 ("TSE") and (ii) on any exchange on which
                                 futures or options contracts related to the
                                 Nikkei 225 are traded, other than a day on
                                 which trading on any such exchange is
                                 scheduled to close prior to its regular final
                                 weekday closing time.

Book Entry Note or
Certificated Note.............   Book Entry

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

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

Agent for this offering of
Notes.........................   Morgan Stanley & Co. International Limited
                                 and its successors ("MSIL")

Market Disruption Event.......   "Market Disruption Event" means with respect
                                 to the Nikkei 225, the occurrence or
                                 existence of any of the following events as
                                 determined by the Calculation Agent:

                                    (i)  a suspension, absence or material
                                    limitation of trading of stocks then
                                    constituting 20% or more, by weight, of
                                    the Nikkei 225 (or the relevant Successor
                                    Index) on the Relevant Exchanges for such
                                    securities for more than two hours of
                                    trading or during the one-half hour period
                                    preceding the close of trading (afternoon
                                    session) in such market or a breakdown or
                                    failure in the price and trading systems
                                    of any Relevant Exchange as a result of
                                    which the reported trading prices for
                                    stocks then constituting 20% or more, by
                                    weight, of the Nikkei 225 (or the relevant
                                    Successor Index) during the last one-half
                                    hour preceding the closing of trading
                                    (afternoon session) on such Relevant
                                    Exchange are materially inaccurate; or the
                                    suspension, material limitation or absence
                                    of trading on any major securities
                                    exchange or market of trading in futures or
                                    options contracts related to the Nikkei
                                    225 (or the relevant Successor Index) for
                                    more than two hours of trading or during
                                    the one-half hour period preceding the
                                    close of trading on such market; and

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

                                 For the purpose of determining whether a
                                 Market Disruption Event exists at any time,
                                 if trading in a security included in the
                                 Nikkei 225


                                     PS-10
<PAGE>



                                 is materially suspended or materially limited
                                 at that time, then the relevant percentage
                                 contribution of that security to the level of
                                 the Nikkei 225 shall be based on a comparison
                                 of (x) the portion of the level of the Nikkei
                                 225 attributable to that security relative to
                                 (y) the overall level of the Nikkei 225, in
                                 each case immediately before that suspension
                                 or limitation.

                                 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 or market, (2)
                                 a decision to permanently discontinue trading
                                 in the relevant futures or options contract
                                 will not constitute a Market Disruption
                                 Event, (3) limitations pursuant to the rules
                                 of any Relevant Exchange similar to NYSE Rule
                                 80A (or any applicable rule or regulation
                                 enacted or promulgated by any other
                                 self-regulatory organization or any
                                 government agency of similar scope as
                                 determined by the Calculation Agent) on
                                 trading during significant market
                                 fluctuations will constitute a suspension,
                                 absence or material limitation of trading,
                                 (4) a suspension of trading in a futures or
                                 options contract on the Nikkei 225 by the
                                 primary securities market related to such
                                 contract by reason of (a) a price change
                                 exceeding limits set by such exchange or
                                 market, (b) an imbalance of orders relating
                                 to such contracts or (c) a disparity in bid
                                 and ask quotes relating to such contracts
                                 will constitute a suspension or material
                                 limitation of trading in futures or options
                                 contracts related to the Nikkei 225 and (5) a
                                 suspension, absence or material limitation
                                 of trading on any Relevant Exchange or on the
                                 primary market on which futures or options
                                 contracts related to the Nikkei 225 are
                                 traded will not include any time when such
                                 market is itself closed for trading under
                                 ordinary circumstances.

Relevant Exchange.............   "Relevant Exchange" means the primary
                                 organized exchange or market of trading for
                                 any security then included in the Nikkei 225
                                 or any Successor Index.

Alternative Calculation of the
Final Index Value in case of
an Event of Default ..........   If an Event of Default with respect to any
                                 Notes shall have occurred and be continuing,
                                 the Calculation Agent will determine the
                                 amount declared due and payable upon any
                                 acceleration of the Notes, which will be
                                 equal to $1,000 plus the Supplemental
                                 Redemption Amount, if any, determined as
                                 though the date on which the Final Index Value
                                 is scheduled to be determined were the date
                                 of acceleration.

Calculation Agent.............   MSIL

                                 All determinations made by the Calculation
                                 Agent will be at the sole discretion of the
                                 Calculation Agent and will, in the absence of
                                 manifest error, be conclusive for all
                                 purposes and binding on you and on us.

                                 Because the Calculation Agent is our
                                 affiliate, potential conflicts of interest
                                 may exist between the Calculation Agent, and
                                 you as the


                                     PS-11
<PAGE>



                                 owner of the Notes, including with respect to
                                 certain determinations and judgments that the
                                 Calculation Agent must make in determining the
                                 Nikkei 225 Percent Change, the Final Index
                                 Value, the Supplemental Redemption Amount or
                                 whether a Market Disruption Event has
                                 occurred. See "Discontinuance of the Nikkei
                                 225; Alteration of Method of Calculation"
                                 below and "Market Disruption Event" above.
                                 MSIL, as a registered broker-dealer, is
                                 required to maintain policies and procedures
                                 regarding the handling and use of confidential
                                 proprietary information, and such policies and
                                 procedures will be in effect throughout the
                                 term of the Notes to restrict the use of
                                 information relating to the calculation of the
                                 Nikkei 225 Percent Change, the Final Index
                                 Value and the Supplemental Redemption Amount
                                 prior to the dissemination of such
                                 information. MSIL is obligated to carry out
                                 its duties and functions as Calculation Agent
                                 in good faith and using its reasonable
                                 judgment.

Nikkei 225 Index..............   We have derived all information regarding the
                                 Nikkei 225 contained in this pricing
                                 supplement, including, without limitation,
                                 its make-up, method of calculation and
                                 changes in its components, from publicly
                                 available information.  Such information
                                 reflects the policies of, and is subject to
                                 change by, the Nihon Keizai Shimbun, Inc.,
                                 which is commonly referred to as NIKKEI.
                                 NIKKEI has no obligation to continue to
                                 publish, and may discontinue publication of,
                                 the Nikkei 225.

                                 The Nikkei 225 is a stock index calculated,
                                 published and disseminated by NIKKEI that
                                 measures the composite price performance of
                                 selected Japanese stocks. The Nikkei 225
                                 currently is based on 225 highly capitalized
                                 underlying stocks (the "Underlying Stocks")
                                 trading on the TSE representing a broad cross-
                                 section of Japanese industries. All 225
                                 Underlying Stocks are stocks listed in the
                                 First Section of the TSE. Domestic stock
                                 admitted to the TSE are assigned to either the
                                 First Section or Second Section. Stocks listed
                                 in the First Section are among the most
                                 actively traded stocks on the TSE. At the end
                                 of each business year, the TSE examines each
                                 First Section stock to determine whether it
                                 continues to meet the criteria for inclusion
                                 in the First Section and each Second Section
                                 stock to determine whether it may qualify for
                                 inclusion in the First Section.

                                 The Nikkei 225 is a modified, price-weighted
                                 index (i.e., an Underlying Stock's weight in
                                 the index is based on its price per share
                                 rather than the total market capitalization
                                 of the issuer) which is calculated by (i)
                                 multiplying the per share price of each
                                 Underlying Stock by the corresponding
                                 weighting factor for such Underlying Stock (a
                                 "Weight Factor"), (ii) calculating the sum of
                                 all these products and (iii) dividing such
                                 sum by a divisor (the "Divisor").  The
                                 Divisor was initially set at 225 for the date
                                 of  May 16, 1949 using historical numbers
                                 from May 16, 1949, the date on which the
                                 Tokyo Stock Exchange was reopened.  The
                                 Divisor was 10.74327 as of June 29, 1999 and
                                 is subject to periodic adjustments as set
                                 forth below.  Each Weight Factor is computed
                                 by dividing Yen50 by the par value of the
                                 relevant Underlying Stock, so that the share
                                 price of


                                     PS-12
<PAGE>



                                 each Underlying Stock when multiplied by its
                                 Weight Factor corresponds to a share price
                                 based on a uniform par value of Yen50. The
                                 stock prices used in the calculation of the
                                 Nikkei 225 are those reported by a primary
                                 market for the Underlying Stocks (currently
                                 the TSE). The level of the Nikkei 225 is
                                 calculated once per minute during TSE trading
                                 hours.

                                 In order to maintain continuity in the Nikkei
                                 225 in the event of certain changes due to
                                 non-market factors affecting the Underlying
                                 Stocks, such as the addition or deletion of
                                 stocks, substitution of stocks, stock splits
                                 or distributions of assets to stockholders,
                                 the Divisor used in calculating the Nikkei
                                 225 is adjusted in a manner designed to
                                 prevent any instantaneous change or
                                 discontinuity in the level of the Nikkei 225.
                                 Thereafter, the Divisor remains at the new
                                 value until a further adjustment is necessary
                                 as the result of another change.  As a result
                                 of such change affecting any Underlying Stock,
                                 the Divisor is adjusted in such a way that
                                 the sum of all share prices immediately after
                                 such change multiplied by the applicable
                                 Weight Factor and divided by the new Divisor
                                 (i.e., the level of the Nikkei 225
                                 immediately after such change) will equal the
                                 level of the Nikkei 225 immediately prior to
                                 the change.

                                 An Underlying Stock may be deleted or added
                                 by NIKKEI.  Any stock becoming ineligible for
                                 listing in the First Section of the TSE due
                                 to any of the following reasons will be
                                 deleted from the Underlying Stocks:  (i)
                                 bankruptcy of the issuer, (ii) merger of the
                                 issuer with, or acquisition of the issuer by,
                                 another company, (iii) delisting of such
                                 stock, (iv) transfer of such stock to the
                                 "Seiri-Post" because of excess debt of the
                                 issuer or because of any other reason (v)
                                 transfer of such stock to the "Kanri-Post"
                                 (Posts for stocks under supervision) or (vi)
                                 transfer of such stock to the Second Section.
                                 In addition, Underlying Stocks with
                                 relatively low liquidity, based on trading
                                 volume and price fluctuation over the past
                                 ten years, may be deleted by NIKKEI subject
                                 to a maximum of six such deletions by reason
                                 of low liquidity per year.  Upon deletion of
                                 a stock from the Underlying Stocks, NIKKEI
                                 will select a replacement for such deleted
                                 Underlying Stock in accordance with certain
                                 criteria.  In an exceptional case, a newly
                                 listed stock in the First Section of the TSE
                                 that is recognized by NIKKEI to be
                                 representative of a market may be added to
                                 the Underlying Stocks.  In such a case, an
                                 existing Underlying Stock with low trading
                                 volume and deemed not to be representative of
                                 a market will be deleted by NIKKEI.

                                 A list of the issuers of the Underlying
                                 Stocks constituting Nikkei 225 is available
                                 from the Nikkei Economic Electronic Databank
                                 System and from the Stock Market Indices Data
                                 Book published by NIKKEI.  NIKKEI may delete,
                                 add or substitute any stock underlying the
                                 Nikkei 225.

                                 NIKKEI first calculated and published the
                                 Nikkei 225 in 1970.  The following table sets
                                 forth the high, the low and the closing
                                 values of the Nikkei 225 for each quarter in
                                 the period from January 1, 1994 through June
                                 29, 1999, as published by NIKKEI.  The
                                 historical performance of the Nikkei 225
                                 should not be taken as an indication


                                     PS-13
<PAGE>



                                 of future performance, and no assurance can be
                                 given that such performance, taken together
                                 with the performance of the stocks underlying
                                 the Nikkei 225, will cause the holders of the
                                 Notes to receive any Supplemental Redemption
                                 Amount under the formula for determining the
                                 Supplemental Redemption Amount.

<TABLE>
                                                                  Nikkei 225 Closing Values
                                                                  -------------------------
                                                                High            Low           Close
                                                                ----            ---           -----
                                 <S>                          <C>            <C>            <C>
                                 1994
                                   First Quarter ............ 20,677.77      17,369.74      19,111.92
                                   Second Quarter ........... 21,552.81      19,122.22      20,643.93
                                   Third Quarter ............ 20,862.77      19,468.89      19,563.81
                                   Fourth Quarter ........... 20,148.83      18,666.93      19,723.06
                                 1995
                                   First Quarter ............ 19,684.04      15,749.77      16,139.95
                                   Second Quarter ........... 17,103.69      14,507.17      14,517.40
                                   Third Quarter ............ 18,758.55      14,485.41      17,913.06
                                   Fourth Quarter ........... 20,011.76      17,337.19      19,868.15
                                 1996
                                   First Quarter ............ 21,406.85      19,734.70      21,406.85
                                   Second Quarter ........... 22,666.80      21,171.82      22,530.75
                                   Third Quarter ............ 22,455.50      20,107.15      21,556.40
                                   Fourth Quarter ........... 21,612.30      19,161.77      19,361.35
                                 1997
                                   First Quarter ............ 19,446.00      17,303.77      18,003.40
                                   Second Quarter ........... 20,681.07      17,485.75      20,604.96
                                   Third Quarter ............ 17,887.71      17,683.27      17,887.71
                                   Fourth Quarter ........... 17,842.16      14,775.22      15,258.74
                                 1998
                                   First Quarter ............ 17,264.34      14,664.44      16,527.17
                                   Second Quarter ........... 16,536.66      14,715.38      15,830.27
                                   Third Quarter ............ 16,731.92      13,406.39      13,406.39
                                   Fourth Quarter ........... 15,207.77      12,879.97      13,842.17
                                 1999
                                   First Quarter ............ 15,779.60      13,232.74      15,779.60
                                   Second Quarter
                                   (through June 29, 1999)... 17,782.79      15,972.68      17,782.79
</TABLE>

                                 Source: Bloomberg

                                 We or our affiliates may presently or from
                                 time to time engage in business with one or
                                 more of the issuers of the component stocks of
                                 the Nikkei 225, including selling products
                                 and/or services to, purchasing products
                                 and/or services from, extending loans to or
                                 making equity investments in any of such
                                 issuers or providing advisory services to
                                 such issuers, including merger and acquisition
                                 advisory services.  In the course of such
                                 business, we, or our affiliates, may acquire
                                 non-public information with respect to such
                                 companies and, in addition, one or more of
                                 our affiliates may publish research reports
                                 with respect to such issuers.  The statements
                                 in the preceding sentence are not intended to
                                 affect the right of holders of the Notes
                                 under the securities laws.  You should
                                 undertake an independent investigation of the
                                 issuers of the component stocks of


                                     PS-14
<PAGE>



                                 the Nikkei 225 and of the Nikkei 225 to the
                                 extent required, in your judgment, to allow
                                 you to make an informed decision with respect
                                 to an investment in the Notes.

Discontinuance of the
Nikkei 225; Alteration of
Method of Calculation.........   If NIKKEI discontinues publication of the
                                 Nikkei 225 and NIKKEI or another entity
                                 publishes a successor or substitute index
                                 that the Calculation Agent determines, in its
                                 sole discretion, to be comparable to the
                                 discontinued the Nikkei 225 (such index being
                                 referred to herein as a "Successor Index"),
                                 then any subsequent Index Closing Value will
                                 be determined by reference to the value of
                                 such Successor Index at the close of trading
                                 on relevant exchange or market for the
                                 Successor Index on the date that the Final
                                 Index Value is to be determined.

                                 Upon any selection by the Calculation Agent
                                 of a Successor Index, the Calculation Agent
                                 will cause written notice thereof to be
                                 furnished to the Trustee, to MSDW and to the
                                 holders of the Notes within three Trading
                                 Days of such selection.

                                 If NIKKEI discontinues publication of the
                                 Nikkei 225 prior to, and such discontinuance
                                 is continuing on, the date that the Final
                                 Index Value is to be determined and the
                                 Calculation Agent determines that no
                                 Successor Index is available at such time,
                                 then on such date, the Calculation Agent will
                                 determine the Index Closing Value that would
                                 be used in computing the Nikkei 225 Percent
                                 Change on such date.  The Index Closing Value
                                 will be computed by the Calculation Agent in
                                 accordance with the formula for and method of
                                 calculating the Nikkei 225 last in effect
                                 prior to such discontinuance, using the
                                 closing price (or, if trading in the relevant
                                 securities has been materially suspended or
                                 materially limited, its good faith estimate of
                                 the closing price that would have prevailed
                                 but for such suspension or limitation) on
                                 such date of each security most recently
                                 comprising the Nikkei 225. Notwithstanding
                                 these alternative arrangements,
                                 discontinuance of the publication of the
                                 Nikkei 225 may adversely affect the value of
                                 the Notes.

                                 If at any time the method of calculating the
                                 Nikkei 225 or a Successor Index, or the value
                                 thereof, is changed in a material respect, or
                                 if the Nikkei 225 or a Successor Index is in
                                 any other way modified so that such index
                                 does not, in the opinion of the Calculation
                                 Agent, fairly represent the value of the
                                 Nikkei 225 or such Successor Index had such
                                 changes or modifications not been made, then,
                                 from and after such time, the Calculation
                                 Agent will, at the close of business in New
                                 York City on the date that the Final Index
                                 Value is to be determined make such
                                 calculations and adjustments as, in the good
                                 faith judgment of the Calculation Agent, may
                                 be necessary in order to arrive at a value of
                                 a stock index comparable to the Nikkei 225 or
                                 such Successor Index, as the case may be, as
                                 if such changes or modifications had not been
                                 made, and calculate the Supplemental
                                 Redemption Amount with reference to the
                                 Nikkei 225 or such Successor Index, as
                                 adjusted.  Accordingly, if the method of
                                 calculating the Nikkei 225 or a Successor
                                 Index is modified so that the value of such
                                 index is a fraction of what it


                                     PS-15
<PAGE>



                                 would have been if it had not been modified
                                 (e.g., due to a split in the index), then the
                                 Calculation Agent will adjust such index in
                                 order to arrive at a value of the Nikkei 225
                                 or such Successor Index as if it had not been
                                 modified (e.g., as if such split had not
                                 occurred).

Use of Proceeds and Hedging...   The net proceeds we receive from the sale of
                                 the Notes will be used for general corporate
                                 purposes and, in part, by us or one or more of
                                 our affiliates in connection with hedging our
                                 obligations under the Notes, including
                                 hedging market risks associated with the
                                 Supplemental Redemption Amount.

                                 On the date of this pricing supplement, we,
                                 through our subsidiaries or others, hedged
                                 our anticipated exposure in connection with
                                 the Notes by the purchase and sale of
                                 exchange traded and over-the-counter options
                                 on the Nikkei 225, individual stocks included
                                 in the Nikkei 225, futures contracts on the
                                 Nikkei 225 and options on such futures
                                 contracts or by taking positions in any other
                                 instruments that we wished to use in
                                 connection with such hedging.  Through our
                                 subsidiaries, we are likely to modify our
                                 hedge position throughout the life of the
                                 Notes, including on the date that the Final
                                 Index Value is to be determined, by
                                 purchasing and selling the securities and
                                 instruments listed above and any other
                                 available securities and instruments that we
                                 may wish to use in connection with our
                                 hedging activity.  Although we have no reason
                                 to believe that our hedging activity had or
                                 will have a material impact on the price of
                                 such options, stocks, futures contracts, and
                                 options on futures contracts or on the value
                                 of the Nikkei 225, we cannot give any
                                 assurance that we did not, or in the future
                                 will not, affect such prices as a result of
                                 our hedging activities.

Supplemental Information
Concerning Plan of
Distribution..................   In order to facilitate the offering of the
                                 Notes, the Agent may engage in transactions
                                 that stabilize, maintain or otherwise affect
                                 the price of the Notes or the stocks
                                 underlying the Nikkei 225.  Specifically, the
                                 Agent may overallot in connection with the
                                 offering, creating a short position in the
                                 Notes for its own account.  In addition, to
                                 cover allotments or to stabilize the price of
                                 the Notes, the Agent may bid for, and
                                 purchase, the Notes or the stocks underlying
                                 the Nikkei 225 in the open market.  See "Use
                                 of Proceeds and Hedging" above.

                                 The Agent proposes initially to offer the
                                 Notes directly to the public at the public
                                 offering price set forth on the cover page
                                 hereof; provided that the price will be 99%
                                 of the Issue Price and the underwriting
                                 discounts and commissions will be reduced to
                                 zero for purchasers of greater than or equal
                                 to $1,500,000 principal amount of the Notes
                                 in any single transaction.

                                 In The Netherlands, these Notes are offered
                                 exclusively to one single investor (the
                                 "Dutch Investor") on the basis of bilateral
                                 negotiations between such Dutch Investor and
                                 the Agent and no other investor or potential
                                 investor in The Netherlands: (i) has been
                                 approached by such Agent or by MSDW or (ii)
                                 may acquire these Notes or any direct or
                                 indirect interest in these Notes.  This
                                 pricing supplement and the accompany
                                 prospectus and prospectus supplement will be

                                     PS-16
<PAGE>



                                 distributed in The Netherlands solely to the
                                 Dutch Investor for its own information and
                                 not for redistribution.  By acquiring such
                                 Notes, the Dutch Investor will undertake with
                                 the Agent and MSDW to hold legal and
                                 beneficial title to such Notes for their
                                 entire term to maturity unless redeemed or
                                 repurchased by MSDW or the Agent in
                                 accordance with the terms of such Notes.

                                 See also "Plan of Distribution" in the
                                 accompanying prospectus supplement.

License Agreement between
NIKKEI and MSDW...............   The use of and reference to the Nikkei 225 in
                                 connection with the Notes has been consented
                                 to by NIKKEI, the publisher of the Nikkei
                                 225.  NIKKEI has the copyright to the Nikkei
                                 Stock Average.  All rights to the Nikkei 225
                                 are owned by NIKKEI.  We, the Calculation
                                 Agent and the Trustee disclaim all
                                 responsibility for the calculation or other
                                 maintenance of or any adjustments to the
                                 Nikkei 225. NIKKEI has the right to change
                                 the contents of the Nikkei 225 and to cease
                                 compilation and publication of the Nikkei
                                 225.  In addition, NIKKEI has no relationship
                                 to us or the Notes; it does not sponsor,
                                 endorse, authorize, sell or promote the
                                 Notes, and has no obligation or liability in
                                 connection with the administration, marketing
                                 or trading of the Notes or with the
                                 calculation of the Initial Index Value or the
                                 Final Index Value, as described above.

ERISA Matters for Pension
Plans and Insurance
Companies.....................   We and certain of our affiliates, including
                                 Morgan Stanley & Co. Incorporated ("MS&Co.")
                                 and Dean Witter Reynolds Inc. ("DWR"), may
                                 each be considered a "party in interest"
                                 within the meaning of the Employee Retirement
                                 Income Security Act of 1974, as amended
                                 ("ERISA"), or a "disqualified person" within
                                 the meaning of the Internal Revenue Code of
                                 1986, as amended (the "Code") with respect to
                                 many employee benefit plans.  Prohibited
                                 transactions within the meaning of ERISA or
                                 the Code may arise, for example, if the Notes
                                 are acquired by or with the assets of a
                                 pension or other employee benefit plan with
                                 respect to which MS & Co., DWR or any of
                                 their affiliates is a service provider,
                                 unless the Notes are acquired pursuant to an
                                 exemption from the prohibited transaction
                                 rules.

                                 The acquisition of the Notes may be eligible
                                 for one of the exemptions noted below if such
                                 acquisition:

                                 (a) (i)  is made solely with the assets of a
                                 bank collective investment fund and (ii)
                                 satisfies the requirements and conditions of
                                 Prohibited Transaction Class Exemption
                                 ("PTCE") 91-38 issued by the Department of
                                 Labor ("DOL");

                                 (b) (i)  is made solely with assets of an
                                 insurance company pooled separate account and
                                 (ii) satisfies the requirements and
                                 conditions of PTCE 90-1 issued by the DOL;

                                 (c) (i)  is made solely with assets managed
                                 by a qualified professional asset manager and
                                 (ii) satisfies the requirements and
                                 conditions of PTCE 84-14 issued by the DOL;

                                     PS-17
<PAGE>



                                 (d) is made solely with assets of a
                                 governmental plan (as defined in Section
                                 3(32) of ERISA) which is not subject to the
                                 provisions of Section 401 of the Code;

                                 (e) (i)  is made solely with assets of an
                                 insurance company general account and (ii)
                                 satisfies the requirements and conditions of
                                 PTCE 95-60 issued by the DOL; or

                                 (f) (i)  is made solely with assets managed
                                 by an in-house asset manager and (ii)
                                 satisfies the requirements and conditions of
                                 PTCE 96-23 issued by the DOL.

                                 Under ERISA, the assets of a pension or other
                                 employee benefit plan may include assets held
                                 in the general account of an insurance
                                 company which has issued an insurance policy
                                 to such plan or assets of an entity in which
                                 the plan has invested.

United States Federal
Taxation......................   The investor should refer to the discussion
                                 under "United States Federal Taxation" in the
                                 accompanying Prospectus Supplement.



                                     PS-18


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