PROSPECTUS Dated March 26, 1998 Pricing Supplement No. 50 to
PROSPECTUS SUPPLEMENT Registration Statement No. 333-46935
Dated March 26, 1998 February 2, 1999
Rule 424(b)(3)
Morgan Stanley Dean Witter & Co.
MEDIUM-TERM NOTES, SERIES C
Senior Fixed Rate Notes
-----------------------
We will not redeem these Medium-Term Notes, Series C (Senior Fixed Rate
Notes) prior to the Maturity Date. We describe the basic features of this type
of note in the section called "Description of Notes--Fixed Rate Notes" in the
accompanying Prospectus Supplement, subject to and as modified by the provisions
described below.
The Internal Revenue Service Restructuring and Reform Act of 1998
eliminated the 18-month holding period requirement for certain individual
taxpayers to qualify for the lowest tax rate for capital gain. The minimum
holding period required to qualify for the lowest tax rate currently is 12
months. In addition, the effective date of New Regulations (as defined in
"United States Federal Taxation -- Backup Withholding" in the accompanying
Prospectus Supplement) has been changed so that the New Regulations will apply
to payments made after December 31, 1999.
Principal Amount: $350,000,000
Maturity Date: February 8, 2001
Settlement Date
(Original Issue
Date): February 8, 1999
Interest Accrual Date: February 8, 1999
Issue Price: Initially at 99.813% and
thereafter at prevailing market
prices.
Specified Currency: U.S. Dollars
Redemption
Percentage: 100%
Redemption Dates: N/A
Annual Redemption
Percentage
Reduction: N/A
Interest Rate: 5.25% per annum
Interest Payment
Dates: Each February 8 and August 8,
commencing August 8, 1999.
Interest Payment
Period: Semi-annually
Book Entry Note or
Certificated Note: Book Entry Note
Senior Note or
Subordinated Note: Senior Note
Agent: Morgan Stanley & Co.
Incorporated
Trustee: The Chase Manhattan
Bank
Minimum
Denomination: $1,000
CUSIP: 61745EMY4
Capitalized terms not defined above have the meanings given to such terms in the
accompanying Prospectus Supplement.
MORGAN STANLEY DEAN WITTER
