Looks similar to a Jap P copy I bought in 79/80, truss rod adjuster was like that, mine was white but if I remember correctly the only colour choice for mine was white or sunburst. Mine had no name on the headstock, but was a quality bass and sounded good, unfortunately the only pic i've got of mine is a bit grainy from a distance, am following this thread with interest.
Someone once told me who had a strat from the same series that they were prototype unbranded Jap Fenders but I never found out if there was any truth in it (probably not), or just somebody trying to big up the instruments at the time, 82ish.