Calvin Johnson Autographed Detroit Lions Authentic Helmet HOF Beckett 44042 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 Detroit Lions Authentic Full Size Helmet that was personally autographed by Calvin Johnson with "HOF" inscription. Includes a certificate of authenticity from Beckett Authentication Services (BAS) and Denver Autographs.