The product is a 1971 Topps #26 Bert Blyleven Rookie that has been authenticated and graded by PSA/DNA. The autograph is hard-signed by Bert Blyleven himself and is considered a professional sports authenticator (PSA) certification. This vintage baseball card features the Minnesota Twins pitcher and is a highly collectible item for fans of MLB memorabilia. The card is a valuable addition to any sports trading card collection due to its rarity, authenticity, and association with a legendary player like Bert Blyleven.