Yamaha Nippon Gakki No. 80 Info?

[Roy B]

I've recently acquired a Yamaha No. 80 (not a "Dynamic" or a "G" model). Block letters "Yamaha" on the headstock, white label inside with "JIS" in upper right corner. Appears to be solid spruce top, with unknown, darker back and sides (probably laminate). Serial number is 661387, and it's marked "Made in Japan" on the back of the headstock. Assume this is about 1966? Anyone have any info on this model?
Thanks,

Roy B

[Bax Burgess]

This is what I was told about a 120:

"Your guitar was made between 1964-1966, and is all solid wood construction with spruce top and maple b/s. The only higher Yamaha models from that era were NO150 (with solid Indian Rosewood b/s) and NO300 (with solid Flamed Maple b/s+ few ornamental extras)."

In the upper right corner of its white label is a circular, unidentified logo above four numerals. The 120, which I originally thought was an all-laminate, withstood several years of low and high humidity swings without detrimental affect.

[Roy B]

Thanks, Bax. I do like mine, so far, especially considering it's at least 50 years old!

RB