This item was hand signed at a Tim Tebow Private Autograph signing. It will come with a proof photo of Tim signing the item and a Certificate of Authenticity from SportsMemorabilia.com. 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.