AJ Green Autographed/Signed Arizona Cardinals F/S Speed Helmet Beckett 34884 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 Arizona Cardinals full size speed replica helmet that was personally autographed by AJ Green. Includes a certificate of authenticity from Beckett Authentication Services (BAS) and Denver Autographs.