BRANCHBURG, NJ -- MeiGray is bringing its full suite of game-worn Photo-Match authentication, sales, and collector services to Rosemont, Illinois from July 29 through August 2, 2026 for one of the collectibles industry’s premier events! The National Sports Collectors Convention is one of the world’s most famous sports memorabilia trade shows. The 46th National Sports Card Collectors Convention will take place at the Donald E. Stephens Convention Center in Rosemont, IL. At the