In the ever-evolving world of sports cards, there seem to be thousands upon thousands of transactions happening daily. Anyone ...

a near-perfect PSA 9 grade, and a $12,000 price tag. Connor McDavid 2015 Upper Deck SP Authentic // $11,900 Edmonton Oilers hockey standout Connor McDavid autographed this rookie card, which PSA ...

Crenshaw's company has a 96% accuracy rate on predicting what Professional Sports Authenticator (PSA) would grade ... if his graders believe a card falls below a 9 or 10, the client can determine ...