A Dallas Cowboys Speed Salute To Service NFL Mini Helmet hand signed by Trevon Diggs. The item and signature are in excellent condition. Trevon is a football cornerback that played for Alabama in college. He was selected in the 2nd round of the 2020 NFL Draft by the Dallas Cowboys. He is a CFP National Champion. AUTHENTICATION: Your item is tagged with a SmarTag powered by Prova Technology, which gives you digital access to your items authentication records, which includes a proof picture from the signing.