The Foundation of All Great Collections. Professional Sports Authenticator (PSA) is the largest and most trusted third-party trading card authentication and grading company in the world. Since its inception in 1991, PSA has certified over 40 million cards and collectibles with a cumulative declared value of over a billion dollars.
Sammy White Baseball Cards
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Sammy Sosa Autographed Memorabilia Signed Photo, Jersey, Collectibles & Merchandise
1990 LEAF #220 SAMMY SOSA RC PSA 6 EX-MT - Duck's Dugout
Sammy Sosa Autographed 1990 Leaf Rookie Card #220 Chicago White Sox SKU #175472
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Sammy Sosa Rookie Card 1990 Leaf #220 PSA 9 : Collectibles & Fine Art