This autographed Riddell Flash Alternate mini helmet has been personally hand-signed by Robert Mathis of the Indianapolis Colts. (Note: There's a smudge in the signature, see photos)

This autograph is certified by James Spence Authentications (JSA) Witnessed Protection Program. That means that a JSA representative was present when this item was signed. It comes with the numbered hologram and matching Certificate of Authenticity.