Randy Gradishar Autographed 1976 Topps #257 Rookie Card BAS 10 Slab 29615 The number in the listing title is just an inventory sku for our records and is not the authentication number. This is a 1976 Topps #257 rookie trading card that was personally autographed by Randy Gradishar. This was professionally authenticated and slabbed by Beckett Authentication Services (BAS), also includes a certificate of authenticity from Denver Autographs.