2015 topps mantle buy-back
 

Last year I was lucky enough to pull a Mantle Buy-Back redemption card from a Wal-Mart rack pack. I redeemed it and, several months later, received the card in the mail. It is a 1961 #406 "Mantle Blasts 565 Ft Home Run" card. Cool enough to get a free Mantle card (even though it is creased up pretty good) but what is really disappointing is the card does not have the foil Buy Back stamp on it. Has anyone else had this happen to them? I saw a 1960 Roger Maris buy Back on ebay and it did have the stamping on it. Topps won't respond to my emails...

My guess is that this is because Topps does not have the rights to make Mickey Mantle cards from Mantle's estate. Stamping the card would technically be making a new card, but simply reissuing it isn't.

Pretty sure Topps card number 7 is a Mantle.
Unless that has ended.

That ended several years ago, and they are back to having no #7 in the set. They lost the Mantle rights a few years back and there haven't been any Mantle cards since.