Baker Mayfield Autographed 2018 Panini Prizm #201 Rookie Card BAS 10 Slab 32435 The number in the listing title is just an inventory sku for our records and is not the authentication number. This is a 2018 Panini Prizm #201 rookie trading card that was personally autographed by Baker Mayfield. This has been professionally slabbed by Beckett Authentication Services and includes a certificate of authenticity from Denver Autographs.