SEARS MUNICIPAL TRUST TENNESSEE PORTFOLIO SERIES 5, 497J, 1994-09-08

SEARS MUNICIPAL TRUST TENNESSEE PORTFOLIO SERIES 5
497J, 1994-09-08

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                                             Rule 497(j)
                                             Reg. No. 33-27809
                                             Reg. No. 33-27514                  
                

Pursuant to Rule 497 (j) promulgated under the Securities Act of 1933, the
Registrant, Dean Witter Select Municipal Trust, Long Term Portfolio Series 121
and Tennessee Portfolio Series 5, hereby certifies as follows:

1)   the form of prospectus that would have been filed under
     paragraph (b) of Rule 497 does not differ from that
     contained in the most recent amendment to the registration
     statement, and

2)   the text of the said amendment to the registration statement
     has been filed electronically.


                    DEAN WITTER SELECT MUNICIPAL TRUST,
                    LONG TERM PORTFOLIO SERIES 121                    TENNESSEE
PORTFOLIO SERIES 5
                              
                    By:  Dean Witter Reynolds Inc.
                         (Depositor)


                         Michael D. Browne
                         Michael D. Browne
                         Authorized Signatory