He's absolutely right about RC's. Also, secondary cards after the first one in the set are NOT rookie cards either (with some conditions). Panini (and Topps) put the RC logo on every single card that they possibly can, but it still doesn't make them RC cards in the hobby. No parallel or insert cards are RC's and they never have been, even when the logo is on the card. If a player has a card in multiple series of the same set, generally ONLY the 1st card is the RC.
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