A St. Louis Cardinals Rawlings Current MLB Helmet signed by Mark McGwire. The item and signature are in excellent condition. Mark is a former MLB first baseman who played for the St. Louis Cardinals and Oakland Athletics. He is a 12x All-star, 2x World Series Champion, a Golden Glove award winner and a 5x Silver Slugger award winner. AUTHENTICATION: Your item is tagged with a Beckett Serial Numbered and Databased Hologram