I've got an A-30R, (Square Headstock), that I bought back in 1976 in Rochester, NY (House of Guitars). From my research, I'm pretty certain this was assembled in Japan, due to the Oval Label in the soundhole. Mine has a serial number stamped on it though and I haven't seen that on any of the Madeiras that are pictured online.
Is it possible that this was somehow assembled in the US?
Is it possible that this was somehow assembled in the US?