Kenneth Walker Autographed Seattle Seahawks Speed F/S Helmet BAS 39852 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 Seattle Seahawks full size speed replica helmet that was personally autographed by Kenneth Walker. Includes a certificate of authenticity from Beckett Authentication Services (BAS) and Denver Autographs.