This is a rare and unique 1988 Topps Don Mattingly #300 Card Style 9 1/2" x 12" Folder by Duo-Tang. It is perfect for any fan of the New York Yankees or Major League Baseball (MLB). The sports trading card features Don Mattingly, a legendary player/athlete known for his outstanding performances on the field. This baseball trading card is a great addition to any collection, and it comes with parallel/variety and base set features. The manufacturer, Topps, is globally recognized for producing high-quality sports trading cards. This item is perfect for avid collectors and enthusiasts alike. We even placed a regular 1988 Topps baseball card along side of the folder for size comparison.