Collectors Universe, Inc. is the leader in third-party grading and authentication services for high-value collectibles. The Collectors Universe brands are among the strongest and best known in their respective markets. We authenticate and grade collectible coins, trading cards, tickets, autographs, memorabilia and stamps. We also compile and publish authoritative information about United States and World coins, collectible sports cards and sports memorabilia and collectible stamps.

Grading and Authentication Services – Coins, trading cards, autographs, memorabilia and stamps 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 sports card grading service; PSA/DNA Authentication Services (PSA/DNA), the largest and most respected autograph authentication provider; and Professional Stamp Experts (PSE), the world's leading third-party stamp grading service.