Yes I've seen it. I picked up a strange guitar at an estate sale about 15-20 years ago that has a cast metal plate that covers the knob cavity. This plate has a Fender Stratocaster style jack plate molded into it. I've been wondering what this guitar is since I bought it. The fender style Telecaster neck has been sanded down so there's no brand on it. It has tuners marked "Fender Japan" and has a black letter T on the back of the neck where it bolts on. It has active EMG pickups but I think the previous owner tried to maybe add them. These pickups are not fully mounted and are not wired up properly to work. The body must be either Bondo or solid fiberglass because it's very heavy. Someday someone will solve this cast back plate mystery for me.
