Originally Posted by dizzyduff13
I'm surprised no one has mentioned the 2009 bowman red 1/1 issue. The real stamped 1/1 were inserted into packs but the topps released the non stamped reds to shops or distributors or something. I have 2 of the Jeff francoeur versions, the true 1/1 and the unstamped version. In theory anyone can stamp them and you wouldn't know the difference between the real 1/1 and the counterfeit one.
This was not a nightmare for topps so I doubt your issue will.
I do not know about these cards but if there is no way to identify the stamped ones versus the non stamped ones then yes anyone with a hot foil stamp machine and the dies and the know how could stamp numbers on the other cards.