Paul Krause, former Hall of Fame safety for the Minnesota Vikings, has hand signed this Vikings Riddell full-size throwback helmet at a private signing. He included the inscription "HOF 98" with his signature. This helmet is a reproduction of the style Krause wore in the 1960's with the suspension inside. This item comes with a certificate of authenticity (COA) from JSA - James Spence Authentication and was signed in the presence of one of their representatives. You will receive a serial-numbered COA along with a matching serial-numbered sticker on the helmet. The authenticity can be verified online by entering the serial number.Item pictured may not be the exact item you will receive. It will be similar quality, and we guarantee your satisfaction.