Why shouldn't the TPG's go to an invisible marking system?
Like with graded memorabilia, put an invisible stamp/id# only visible under blacklight, to the card....plus, the TPG's should have a scanned copy of all cards in their internal database. If a card is resubmitted with a stamp, they now can cross reference to see if card has been altered. I would gladly pay a few bucks more per card.
Rob
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