Duane Thomas Signed Dallas Cowboys Mini Helmet 1st TD Texas Stadium SGC 21070 This is a Dallas Cowboys Riddell mini helmet that was personally autographed by Duane Thomas with 1st TD Texas Stadium inscription. He is a former American football running back in the National Football League for the Dallas Cowboys and the Washington Redskins. He played college football at West Texas State University. This item includes a certificate of authenticity from Sportscard Guaranty (SGC) and Denver Autographs.