Michael Mayer Signed Notre Dame Logo Football Play Like Champion BAS 37439 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 white logo football that was personally autographed by Michael Mayer. Includes a certificate of authenticity from Beckett Authentication Services (BAS) and Denver Autographs.