What do you think happened here? I noticed right away that the back panel label for the vibrato channel was partly curled up: But on going to fix it, I see the original foil label had simply been cut off and the trem part rotated. Then someone had rolled up the right end to uncover the serial number, which got covered up when the label segment was moved. Why? Cuz someone had put the trem jack on the back rather than the bottom of the chassis, even though there's a hole in the chassis for the (?? original) position (under hemostats at bottom): What happened here? Was this a factory deal? Note the mounting holes for the RCA jack sit almost on top of the mounting screws for the 6V6 socket. So maybe someone at the factory improvised? Or was this a mod, somehow?