This Autographed Yellow Full Size Speed Rep Helmet has been Personally Signed by Tyrann Mathieu of the Louisiana State Tigers. This item is 100% Authentic to include a Certificate of Authenticity (COA) / hologram by JSA Witness. This is a JSA Witnessed Protection Program item which means a JSA representative was present when this item was being signed. This is a stock item. We conducted an autograph signing with Tyrann Mathieu and we have several of these available. The one you will receive will be of equal quality to the one pictured. This item can be verified through JSA Witness.