Troy Polamalu Signed Pittsburgh Steelers Authentic Camo Helmet HOF BAS 29643 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 full size authentic Camo speed helmet that was personally autographed by Troy Polamalu with HOF inscription. Includes a certificate of authenticity from Beckett Authentication Services (BAS) and Denver Autographs.