My father in law got this Fender jazz bass copy from the loft. The back plate says Made in Japan. It is solid and heavy about 40 years old. The neck is wide but not chunky.It has old flat wounds on and sounds dead. I've played it through a cheap guitar amp so far. The knobs don't work properly. No idea what make it is but sprucing it up with electronics it would make a nice bass. Anyone has any suggestions what it may be