The product is a 1987 Topps #366 Mark McGwire Oakland Athletics rookie card graded PSA 10 GEM MINT. This trading card features Mark McGwire, a former baseball player who played for the Oakland Athletics. As a rookie card, it holds value for collectors looking to add a piece of baseball history to their collection. The card is from the 1987 Topps set, known for its iconic design and is highly sought after by fans and collectors alike.