Rule 497(d)
FT 423
Supplement to the Prospectus dated April 12, 2000
Sales Charge Discount for Eligible Purchasers
Notwithstanding anything to the contrary in the Prospectus, you can use your
redemption or termination proceeds from any Nike Securities L.P. sponsored unit
investment trust to purchase Units of the Trusts in FT 423 during the initial
offering period at the Public Offering Price less 1%. Dealers and other
selling agents will receive a concession or agency commission of 1.75% of the
sales price of Select Portfolio Series Units sold pursuant to this provision
and 2.2% (2.5% for volume purchasers) of the sales price of Portfolio Series
Units sold pursuant to this provision.
May 3, 2000
