Ricky Williams Signed Autographed Texas Longhorns Riddell Speed Full Size Helmet with 98 Heisman Inscription. This licensed Helmet is personally signed by Ricky Williams. This autograph is 100% certified and authenticated by JSA, and comes with their authentication sticker and matching certificate of authenticity that can be verified online. This signed Helmet is a perfect gift for any Texas Longhorns fan! Shop for more Texas Longhorns items at Prime One Sports.com.