Marcus Allen, former Heisman Trophy winning running back for the Trojans, has hand signed this USC Riddell Speed full-size replica helmet at a private signing. He included the inscription "Heisman 81". This item is authenticated by Beckett Authentication Services and was signed in the presence of one of their representatives. Their tamper-evident hologram featuring a QR code and serial number is on the item. The authenticity can be verified online by entering the serial number or scanning the QR code.Item pictured may not be the exact item you will receive. It will be similar quality, and we guarantee your satisfaction.