John David Crow; former Heisman Trophy winning running back for the Aggies; has hand signed this Texas A&M Riddell full-size replica helmet at a private signing. He included the inscriptions "57 Heisman" and "Coach Bryant's only Heisman winner" with his signature.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.