Troy Polamalu Autographed/Signed Pittsburgh Steelers 8x10 Photo BAS 34212 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 8x10 photo that was personally autographed by Troy Polamalu. Includes a certificate of authenticity from Beckett Authentication Services (BAS) and Denver Autographs.