This 1991 Post Cereal Collector Series Don Mattingly #29 trading card is a must-have for any New York Yankees fan or collector. Featuring the iconic first baseman in his prime, this card is a great addition to any sports trading card collection. With its Major League Baseball (MLB) league designation and "Post" manufacturer, you can be sure of the quality of this card. It's part of the 1991 season and has a card number of 29 out of 30. Perfect for any baseball enthusiast, this trading card is a true gem.