The product is a 1987 Topps Mark McGwire #366 baseball trading card featuring the player from the Oakland Athletics. This card is a part of the Topps base set for the 1987 season in Major League Baseball (MLB). As a classic sports trading card, it holds value for collectors and fans of Mark McGwire and baseball memorabilia. The card is in near mint or better condition, making it a desirable addition to any collection of baseball cards from the 1980s.