yes ,,, you are right there ,,,, the used the 70 fender routing on greco before 79 ,,,,, and 54/63 on later greco
but i still think they look so alike ,,,,,, that matsumuko was the builder
if you look at the other brands ,,,, burny Fernandes tokai ,,,, they all have there difference routing ,,, they are Easy to tell apart ,,,,,,
and i got a matsumuko to compare to greco ,,,,, and they have the same fell to them ... maybe matsumuko did surply body and neck to greco and the just put them together at fujigen ,,,,,,
i hope some one else know more so we can find out for sure ,,,,
all the best
but i still think they look so alike ,,,,,, that matsumuko was the builder
if you look at the other brands ,,,, burny Fernandes tokai ,,,, they all have there difference routing ,,, they are Easy to tell apart ,,,,,,
and i got a matsumuko to compare to greco ,,,,, and they have the same fell to them ... maybe matsumuko did surply body and neck to greco and the just put them together at fujigen ,,,,,,
i hope some one else know more so we can find out for sure ,,,,
all the best