I completely agree with C2C. Find authentic examples and compare what you have to those. I bought an AU'd Ozzie Smith photo off ebay several years ago with no authentication for it. I compared it to the 3 examples I owned on cards (2 authenticated by the card manufacturer and one IP that I know is real). It matched so much that I was comfortable buying it. Without authentication though, expect to get much less money.
I'd love to see the Bob Gibson and might be interested in getting it.
NO PWE's EVER!!! PLZ PM me 1st before sending any offer. ONLY selling cards as of March 2024. No trades or purchases right now.
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Largest total PC card collections by Team, then Athlete (as of 3/22/24):
STL Cardinals (MLB) - 8810; Carolina Panthers - 2888; GB Packers - 1790+ cards
Mark Martin (NASCAR) - 2038 cards; Jimmie Johnson (NASCAR) - 1875 cards; Jeff Gordon (NASCAR) - 1594; Ricky Rudd (NASCAR) - 839; Ozzie Smith (MLB) - 707