Mike Mussina Signed Baltimore Orioles 1991 Fleer Ultra Trading Card BAS 29568 The number in the listing title is just an inventory sku for our records and is not the authentication number. This is a 1991 Fleer Ultra Update #4 trading card that was personally autographed by Mike Mussina. This was slabbed by Beckett Authentication Services (BAS) includes a certificate of authenticity from Denver Autographs.