Signed in Black marker underneath Louisville Slugger. Bat is cracked from where tape starts up about six inches. Tom played in the Phillies, Cubs, and Mets organizations but never made a regular season major league appearance, so we're assuming this a spring training bat. We guarantee any autograph we sell to pass 3rd party authentication with CAS, our authenticator of choice. If you want to take advantage of the guarantee you must notify us before we ship. Once you have taken possession of an item it is yours!