Celebrate the remarkable career of Hoyt Wilhelm with this Official National League Baseball hand signed by the Hall of Fame pitcher. Known for his devastating knuckleball, Wilhelm became a pioneering relief ace and pitched successfully into his late forties during a career spanning 21 seasons. His accomplishments ultimately earned him induction into the National Baseball Hall of Fame in 1985. The autograph has been independently authenticated by James Spence Authentication JSA and is accompanied by a JSA Certificate of Authenticity COA.