Barry Switzer and Bob Stoops; former legendary head coaches for the Sooners; have each hand signed this Oklahoma Riddell Speed full-size replica helmet at a private signing. They each included inscriptions for the National Championships they won. 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.