The product is a 1984 Donruss Don Mattingly #248 rookie trading card featuring the Major League Baseball player from the New York Yankees. This sports trading card has been professionally graded by Professional Sports Authenticator (PSA) with a grade of 7. The card is from the base set of the 1984 Donruss collection and is a valuable addition for collectors and fans of baseball memorabilia. The certification number for this specific card is 137983147.