The product is a collection of 10 standard-sized baseball trading cards featuring Don Mattingly from the 1987 Topps set. These original cards are made of card stock with a thickness of 20 Pt., and they are in excellent condition. The cards showcase the MLB World Series and are part of the base set manufactured by Topps in the United States. They are in English and are from the Major League Baseball (MLB) league, specifically the New York Yankees team. Perfect for collectors or fans of Don Mattingly and vintage baseball cards.