The product is a 1998 Donruss Signature Mark McGwire #52 Signature Proof trading card. This original card features Mark McGwire, a Major League Baseball player for the St. Louis Cardinals, and is part of the 1998 Donruss set. The card is a standard size and made of card stock, with the signature proof variety adding uniqueness to the piece. This sports trading card commemorates the MLB World Series and is a must-have for fans and collectors of baseball memorabilia.