This Autographed Authentic Full Size Proline Helmet has been Personally Signed by Notable Signatures Include: Tony Gonzalez, Dick Vermiel, Morten Anderson, Dante Hall, Trent Greene, Willie Roaf, Will Shields, John Browning, John Tait, Fred Jones, Lyle West, Todd Collins, Jonathan Quinn, Casey Wiegmann, Ryan Sims, Vonnie Holliday, Brett Williams, Tony Richardson, Donald Willis, Jerome Woods, Marcus Spears Greg Wesley of the Kansas City Chiefs. This item is 100% Authentic to include a Certificate of Authenticity (COA) / hologram by Beckett Authentication Services. The authenticity can be verified on Beckett Authentication Services website.