Tony Dorsett Signed Dallas Cowboys '81 Marketcom Poster Beckett 40981 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 1981 Marketcom Poster that was personally autographed by Tony Dorsett. Includes a certificate of authenticity from Beckett Authentication Services (BAS) and Denver Autographs.