I have noticed over the past few years that Topps has been making RC's within a set with a glossy back while the veteran cards do not have a glossy back. I've noticed this in several brands and in multiple sports. I don't know if that helps any, but it's something I've noticed. I just came across the same thing again tonight while pulling some 2015 Topps Platinum NFL cards for a trade. The base card wasn't glossy on the back, but the RC was.
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