If the trade was deleted, then the card should have remained in the trader's collection UNLESS he manually deleted the card afterwards. So the #2 option above would be the best bet to find out where you got it. Another option is to check your PM's for SENT PM's if you don't delete them frequently. Most people don't delete those, so you might find the PM chain with that member. Just floating some ideas for you.
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