TJ Watt Autographed Pittsburgh Steelers Authentic Flat White Helmet JSA 28470 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 Flat White authentic/proline helmet that was personally autographed by TJ Watt. Includes a certificate of authenticity from James Spence Authentication (JSA) and Denver Autographs.