I was in a used guitar store today, and came across an odd bass. It had the neck (and headstock) of either a P, or J bass. Yet the body looked like a telecaster style 50's P bass body, only with a J or P style pickguard. It had two knobs like the old 50's fenders, but it also had a hole for where a third knob must have been. Lastly, there was no metal plate around the knobs. It had only one pick up, just like the 50's telocaster style P basses. Can anyone tell me what kind of bass this was? I'm really baffled. Thanks.