Jerome Bettis Autographed/Signed Pro Style Black XL Jersey BAS 28150 The number in the listing title is just an inventory sku for our records and is not the authentication number. This is a custom pro style black XL jersey with sewn on name and numbers that was personally autographed by Jerome Bettis. Includes a certificate of authenticity from Beckett Authentication Services (BAS) and Denver Autographs.