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About PSA

The Foundation of All Great Collections.

More about PSA

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.

PSA is a division of Collectors Universe, which has offices in California, New Jersey, Paris, Hong Kong, Shanghai and Tokyo.

As the only third-party grading service to offer a guarantee on its services, PSA has emerged as the clear leader in authentication and grading for trading cards and other collectibles.