A little more than two months after launching comic book and magazine grading as a new category, PSA is expanding the vertical to include dual service autograph authentication, the company announced ...

JERSEY CITY, N.J.--(BUSINESS WIRE)--Professional Sports Authenticator (PSA), the leading authenticator and grader of sports cards and memorabilia, announces the launch of its services for Funko Pops!.

An autographed 1979 O-Pee-Chee Wayne Gretzky rookie card sold for $540,000 including buyer's premium in Fanatics Collect's ...

Autographs have transformed many iconic 1980s baseball cards into five-figure collectibles. These are the most valuable and ...

An on-card autographed 1997-98 Upper Deck Game Jersey Michael Jordan card, with a jersey swatch embedded from the 1992 NBA ...

It was once considered taboo to have vintage cards autographed. Any writing on a card, even an in-person autograph, was considered damage to an original collectible. But the hobby's stance has evolved ...