Louisville Slugger Pro Stock Baseball Bat. Hand-signed and inscribed "40-40" by Jose Canseco (Oakland Athletics, Boston Red Sox, New York Yankees, Texas Rangers, Tampa Bay Rays, Toronto Blue Jays, Chicago White Sox). Baseball's first ever 40-40 man.The autograph(s) includes an official James Spence Authentication (JSA) hologram and QR Code Card for authenticity purposes. The signing of this item was witnessed by JSA.Authentication: JSA Hologram with QR Code Card