DetailsA Minnesota Vikings Authentic Helmet hand signed by Dalvin Cook. The item and signature are in excellent condition. In addition to signing his name, Dalvin also inscribed "SKOL" on the item. Dalvin is a running back for the Minnesota Vikings. AUTHENTICATION: The item is accompanied by a JSA Certificate of Authenticity - JSA Serial Numbered and Databased Hologram- ANY QUESTIONS CALL 1-770-945-6945 *** Radtke Sports uses professional lighting for our product images that may show reflections. We also feature watermarks on our proof pictures.