Don Mattingly Autographed New York Yankees OML Baseball Beckett 40446 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 New York Yankees Official Major League Baseball that was personally autographed by Don Mattingly with three inscriptions "85 AL MVP", "Donnie Baseball", and "Hit Man". Includes a certificate of authenticity from Beckett Authentication Services (BAS) and Denver Autographs.