The product is a vintage silver coin made by Highland Mint in 1998 to commemorate Mark McGwire's 62nd home run. The coin weighs 1 oz and has a fineness of 0.999. It features an image of Mark McGwire and is officially licensed. The coin is numbered 5686 out of a limited edition of 7500. It is associated with the St. Louis Cardinals baseball team and is a piece of sports memorabilia.