Riddell Oklahoma Sooners speed mini helmet. Hand-signed and inscribed by Adrian Peterson. Please note, it has the classic upside-down Longhorns Decal, which is one of the most recognized hand signals of all American universities. A variant of the Horns, formed upside down with the thumb pointed outward, is often used by rivals of the Longhorns and is considered insulting, especially when performed by a player or coach of the team in question.The autograph includes an official Beckett Authentication Services serially numbered hologram for authenticity purposes. The signing of this item was witnessed by Beckett.Authentication: Beckett Hologram