Mikaela Shiffrin Autographed USA Olympic Wheaties Box Beckett 40531 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 Wheaties Box that was personally autographed by Mikaela Shiffrin. Includes a certificate of authenticity from Beckett Authentication Services (BAS) and Denver Autographs.