Michael Irvin Autographed Dallas Cowboys Authentic Speed Helmet Beckett 38217 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 Dallas Cowboys full size authentic speed helmet that was personally autographed by Michael Irvin. Includes a certificate of authenticity from Beckett Authentication Services (BAS) and Denver Autographs.