Looks like it was cut from a box to me, and I don't mean the box bottom cards. The back of a real card would not look like that. Centering has absolutely nothing to do with it being cut out of something else or not being cut out, as it is easy to cut something to be centered perfectly with enough patience to do it. Certainly not a "blank back" card, IMO. Either way, "blank backs" do not get listed on this site as they would be considered a printing error, not an intentional or later-corrected card. I'm sure someone else on this site can give a much better explanation of where this came from or how it happened.
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