Collectors Universe, Inc. is the leader in third-party grading and authentication services for high-value collectibles. The C ... ollectors Universe brands are among the strongest and best known in their respective markets. We authenticate and grade collectible coins, trading cards, tickets, autographs and memorabilia. We also compile and publish authoritative information about United States and World coins, collectible trading cards and memorabilia. Grading and Authentication Services – Coins, trading cards, autographs and memorabilia comprise our principal authentication and grading markets. Our brands in those markets include: Professional Coin Grading Service (PCGS), the world's leading third-party coin grading service; Professional Sports Authenticator (PSA); the world's leading third-party trading card grading service; and PSA/DNA Authentication Services (PSA/DNA), the largest and most respected autograph authentication provider. read more