Cowboys Triplets Signed F/S Black Matte Helmet Aikman Smith Irvin BAS 28399 The number in the listing title is just an inventory sku for our records and is not the authentication number. This is a Dallas Cowboys full size Flat Black replica helmet that was personally autographed by Troy Aikman, Emmitt Smith and Michael Irvin. Includes a certificate of authenticity from Beckett Authentication Services (BAS) and Denver Autographs.