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 matching COA for authenticity purposes. The signing of this item was witnessed by JSA.Authentication: JSA COA