Joe Greene Autographed Pittsburgh Steelers 1963-76 Mini Helmet HOF BAS 33236 The number in the listing title is just an inventory sku for our records and is not the authentication number. This is a Pittsburgh Steelers 1963-76 throwback mini helmet that was personally autographed by Joe Greene with HOF inscription. Includes a certificate of authenticity from Beckett Authentication Services (BAS) and Denver Autographs.