David Montgomery, star running back for the Detroit Lions, has hand signed this Lions Riddell Speed full-size authentic helmet at a private signing. This helmet is fully padded inside like the ones worn on the field. 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.