This Autographed Game Used Louisville Slugger C243 Player Model Baseball Bat has been Personally Signed by Geronimo Berroa of the Oakland Athletics. This item is 100% Authentic to include a Certificate of Authenticity (COA) / hologram by Beckett Authentication Services. The authenticity can be verified on Beckett Authentication Services website. There is no paperwork for the game use. We purchased from a former Oakland A's employee from that and the stamping and markings on the bat do lead us to believe this is in fact game used.