Hi Eric,
Good to see some pics of this one, very classy old bass!
I think it's a late 70s copy, looks pretty accurate to me - in fact apart
from the logo & MIJ plate the only thing that would immediately ID it as
a copy is the 7-screw bridge.
Am I right in thinking it's a single-piece neck too, rather than having a
glued-on fretboard?
Anyway, the problem with later MIJ copies is that the more accurate
they got the harder it is to tell them apart, and CMI sourced from several
different factories.
This makes it pretty awkward to stick my neck out & name a factory!
Can you tell if the brass nut's original?
Certainly never seen this on a copy before but if it is original that would
definitely put it at late 70s, wherever it's from.
Neckplates are as always the best clue, and I can say it's not Matsumoku.
I think the bass is likely 76 - 78, and Mat plates would have either the factory
or a Steel Adjustable Neck stamp, as well as a dateable serial number by
this point. Probably.
Plates stamped on the lower half like this were very commonly used on
Fujigens - prior to the introduction of serials in late '75 they were all like this,
and I think non-serial plates were still used on the more generic off-brand
instruments.
So Fujigen's a possibility if not a certainty.
A few other factories (not all of which have been specifically identified!) used
this style of plate so the only way of making a 100% positive ID would be to
find an identical bass with a brand with a known origin.
Personally I'd love to be able to compare this to say, an Ibanez Silver/Challenger
Series of the equivalent Antoria - with enough attention to detail you could work
out if the neck, body & routing had used the same templates or CNC settings.
Anyway, I'm inclined to say it might well be a Fujigen build - I'll have a dig & see
if I can find some comparable Ibanez, Antoria or Greco basses from the same
approximate era.