Joe Greene Signed Pittsburgh Steelers M&N Jersey sz L HOF Beckett 42836 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 Pittsburgh Steelers Mitchell and Ness Black Jersey size Large that was personally autographed by Joe Greene with "HOF" inscription. Includes a certificate of authenticity from Beckett Authentication Services (BAS) and Denver Autographs.