This autographed custom on-field style adult XL jersey has been personally hand-signed by Don Wert of the Detroit Tigers. Wert added the inscription "68 WSC" along with his signature.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.Authentication: JSA COA