The product is a 1991 Donruss Diamond Kings trading card featuring Brian Harper of the Minnesota Twins. This specific card has a variation with two white lines on the left border, making it a unique and collectible item for baseball enthusiasts. The card is part of the base set produced by Leaf in 1991, showcasing Harper in his MLB career. This vintage trading card is a must-have for fans of Major League Baseball looking to add a rare piece to their collection.