Don Mattingly Signed 1984 Topps #8 New York Yankees Card Beckett 40833 The number in the listing title is just an inventory sku for our records and is not the authentication number. This is the exact item that you will receive so please see pictures for condition. This is a 1984 Topps #8 trading card with a grade 10 autograph that was personally autographed by Don Mattingly. This has been professionally slabbed by Beckett Authentication Services (BAS) and includes a certificate of authenticity from Denver Autographs.