Michael Mayer Signed Note Dame Fighting Irish F/S Classic Helmet BAS 38784 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 Notre Dame Fighting Irish full size replica helmet that was personally autographed by Michael Mayer with Go Irish inscription. Includes a certificate of authenticity from Beckett Authentication Services (BAS) and Denver Autographs.