Warren Moon Autographed/Signed Pro Style Purple XL Jersey HOF BAS 31160 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 purple XL jersey with sewn on name and numbers that was personally autographed by Warren Moon with HOF inscription. Includes a certificate of authenticity from Beckett Authentication Services (BAS) and Denver Autographs.