Spalding NBA Game Ball Series Game Replica Basketball. Hand-signed by Patrick Williams (Chicago Bulls). This is a limited edition basketball and has been numbererd #25 / 50.The lot / autograph(s) includes an official Beckett "Rookie Year" Authentication Services serially numbered hologram and matching COA for authenticity purposes. Beckett defines their "Rookie Year" authentication as "A way to acknowledge autographs obtained before an athlete starts their second full season as a professional."Authentication: Beckett "Rookie Year" COA