This autographed OAL Baseball has been personally hand-signed by 7 members of the 300 Win Club including Tom Seaver, Nolan Ryan, Warren Spahn, Early Wynn, Gaylord Perry, Steve Carlton & Don Sutton. All the signers inscribed the ball with their career win total. These autographs are certified by James Spence Authentication (JSA). It comes with the numbered hologram and matching Letter of Authenticity.