SEARS MUNICIPAL TRUST LONG TERM PORTFOLIO SERIES 122, 497J, 1996-09-12

SEARS MUNICIPAL TRUST LONG TERM PORTFOLIO SERIES 122
497J, 1996-09-12

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                                                  Rule 497(j)
                                                  Reg. No. 33-47083

Pursuant to Rule 497 (j) promulgated under the Securities Act of
1933, the Registrant, Dean Witter Select Municipal Trust, Long Term
Portfolio Series 122, 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 122
                                                  
                              By:  Dean Witter Reynolds Inc.
                                   (Depositor)



                                   Thomas Hines
                                   Thomas Hines
                                   Authorized Signatory