Marcus Allen has personally hand signed this helmet as well as inscribed it with the rare double inscription: "HOF 03" and "SB XVIII MVP" This authentic proline Oakland Raiders helmet is limited to only 32. The autograph includes an official Steiner hologram and matching COA for authenticity purposes. A Steiner Sports Certificate of Authenticity is included. Comes with a tamper-evident hologram from STEINER SPORTS Officially licensed by the NFL hand signed authentic Proline helmet signed by Marcus Allen. This piece comes complete with the serial numbered hologram from Steiner Sports hologram. Authenticator : Steiner Sports Authenticated History of item : Marcus Allen has signed this item in the presence of a representative from Steiner Sports.