This Autographed Riddell Full Size Speed Rep Helmet with the inscription of "America's Team, 3x All Pro, We Dem Boyz!, 2021 All Pro, 11 INTS" has been Personally Signed by Trevon Diggs & Everson Walls of the Dallas Cowboys. This item is 100% Authentic to include a Certificate of Authenticity (COA) / hologram by JSA. The authenticity can be verified on JSA website.