A Seattle Mariners Rawlings Mach Pro MLB Helmet hand signed by Edgar Martinez. The item and signature are in excellent condition. Edgar is a former professional baseball Player and coach. He spent his career with the Seattle Mariners as a designated hitter and third baseman. He is a 7x All Star, 5x Silver Slugger award winner, and has received the Roberto Clemente Award. AUTHENTICATION: Your item is tagged with a SmarTag powered by Prova Technology, which gives you digital access to your items authentication records, which includes a proof picture from the signing.