Dad's brother bought him this in 1971 at a music shop in Bellingham, WA. From internet research, it seems this one has a similar headstock and bridge as Greco and Electra EB-3s, but distinct in that it has a wood thumbpiece on the pickguard, double string grooves in the bridge saddle, and the strap button is on the neck not the body. It's also not a true humbucker pickup.
With it being similar to those brands I thought it might be a Fujigen, but there was one almost exactly like it (other than the strap button location) sold on Reverb years ago as a Matsumoku. Any idea who made it?
Pics:
https://imgur.com/a/Z1kxLQg