Deion Sanders Autographed/Signed 1990 Leaf Trading Card BAS Slab 32092 The number in the listing title is just an inventory sku for our records and is not the authentication number. This is a 1990 Leaf trading card that was personally autographed by Deion Sanders. This was professionally slabbed by Beckett Authentication Services (BAS) and includes a certificate of authenticity from Denver Autographs.