Laviska Shenault Autographed 2021 Panini Prizm #350 Trading Card BAS Slab 33253 The number in the listing title is just an inventory sku for our records and is not the authentication number. This is a 2021 Panini Prizm #350 trading card that was personally autographed by Laviska Shenault. This has been professionally slabbed by Beckett Authentication Services (BAS) and includes a certificate of authenticity from Denver Autographs.