Custom on-field style jersey with everything sewn on, size XL. Hand-signed in black felt-tip pen by O. J. McDuffie. This autographed jersey has been personally hand-signed by O.J. McDuffie of the Penn State Nittany Lions. This autograph is certified by James Spence Authentication's (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.