Adrian Peterson Signed Minnesota Vikings Authentic Speed Helmet ROY BAS 39014 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 Minnesota Vikings full size authentic speed helmet that was personally autographed by Adrian Peterson with ROY inscription. Includes a certificate of authenticity from Beckett Authentication Services (BAS) and Denver Autographs.