This is a PSA Graded Mint 9 1991 Topps #100 Don Mattingly "10 Hits in 1990" Error Card. This vintage baseball trading card features Don Mattingly of the New York Yankees. This original card is part of the '91 Topps base set and made of standard card stock. It is a rare error card with a unique and sought-after player and team, making it a valuable addition to any sports trading card collection.