Adrian Peterson Signed Minnesota Vikings 11/30/08 Media Guide BAS 42552 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 Minnesota Vikings 11/30/08 Media Guide that was personally autographed by Adrian Peterson. Includes a certificate of authenticity from Beckett Authentication Services (BAS) and Denver Autographs.