I just picked up what I take to be a 70s/80s Japanese Jazz. It’s badged as Yasuki which I can find almost zero information on. I dropped Bassassin a mail before I bought it just for some tips and he pointed me to SH73’s post about his unbranded Jazz. This bass has similar rounded pickups, it’s a dark natural colour and has a serial number on the neckplate. I plugged it in and other than the action being terrible and the strings very old, it’s sounded like a Jazz. It’s heavy but not outrageously