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ScottAs David said, these are "unique", meaning that probably about 10 of them were originally made, and most eventually found their way to the fire place.
These usually go for about $10-30 on ebay, depending on how visually attractive the card is (assuming the team/players are obscure)but do much better at shows and in non-ebay auctions, i.e - if you could "collect" about ten of them, you could probably sell them through an auction house for $300 or so (make a little profit). That's what I've noticed - others might have picked up a different slant on it.