Josh Allen Autographed Buffalo Bills Nike White XL Game Jersey Beckett 38740 The number in the listing title is just an inventory sku for our records and is not the authentication number. The item pictured is a stock photo unless otherwise noted. This is a Buffalo Bills Nike white size XL game jersey that was personally autographed by Josh Allen. Includes a certificate of authenticity from Beckett Authentication Services (BAS) and Denver Autographs.