Tony Dorsett Autographed/Signed Dallas Cowboys F/S AMP Helmet HOF BAS 28359 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 AMP replica helmet that was personally autographed by Tony Dorsett with HOF inscription. Includes a certificate of authenticity from Beckett Authentication Services (BAS) and Denver Autographs.