This Autographed Authentic Full Size Proline Helmet has been Personally Signed by Troy Aikman, Ed "Too Tall" Jones, Jethro Pugh, Efren Herrera, Duane Thomas, Jerry Groom & Rayfield Wright of the Dallas Cowboys. 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.