14 Signatures on this full-size helmet include Coach Jim Tressel "Yea Ohio!" , Craig Krenzel , Mike Doss , Brandon Joe , Marcus Green , Mike Kudla , Ben Hartsock , Maurice Hall , Matt Wilhelm , Tyler Evertt & Kenny Peterson. This item was hand signed by the athletes and is accompanied by a Certificate of Authenticity from Palm Beach Autographs. A tamper-evident hologram will be affixed to the item. Signed items are guaranteed to pass any third-party authentication with 100% Money Back Guarantee. Each signature is witnessed by a member of our staff or comes out of a private signing.