This Autographed Game Used Official Minor League Pat O'Conner Baseball has been Personally Signed by Jack Leiter of the Texas Rangers. This item is 100% Authentic to include a Certificate of Authenticity (COA) / hologram by JSA. The authenticity can be verified on JSA website. This baseball has some toning due to age. Please refer to pictures for item's condition prior to purchase. This baseball's game use is not authenticated, but it is consistent with known exemplars from this era of play.