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Professional Sports Authenticator (PSA) is the largest and most trusted third-party grading and authentication company in the world and has processed over 20 million cards and collectibles.
Founded by PSA in 1998 in response to widespread counterfeiting, forgery and piracy of autographed collectibles, PSA/DNA is the world's leading third-party authentication service for autographs and memorabilia.
PSA is also a major content producer for the collecting hobby. PSA offers a price guide for its certified collectibles, population reporting for market supply & demand data, and informative videos, articles and slideshows.
Visit us at www.psacard.com