This Dalvin Cook Autographed Florida State Seminoles Black Schutt Full Size Replica Helmet - JSA comes with a Certificate of Authenticity (COA) from JSA. The product has been personally hand-signed by Dalvin Cook. Prime One Sports is an online leader in authentic Dalvin Cook signed memorabilia. Your order ships out same day. Commemorate the career of Florida State Seminoles great, Dalvin Cook with a certified collectible at a great value.