NATIONAL EQUITY TRUST TOP TEN PORTFOLIO SERIES 21, 497J, 2000-01-04

NATIONAL EQUITY TRUST TOP TEN PORTFOLIO SERIES 21
497J, 2000-01-04

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                                   Rule 497(j)
                                   Reg. No. 333-90059

Pursuant to Rule 497(j) promulgated under the Securities Act of
1933, the Registrant, National Equity Trust, Top Ten Portfolio Series 21 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.

                                  NATIONAL EQUITY TRUST
                                  TOP TEN PORTFOLIO SERIES 21
                                  (Registrant)

                                  By:  Prudential Securities
                                       Incorporated


                                       Richard R. Hoffmann
                                       First Vice President
                                       Authorized Signatory


Securities and Exchange Commission
450 Fifth Street, N.W.
Washington, D. C.  20549