Reviews on a similar model (G120) here - with discussion on origins in 1960s
http://reviews.harmony-central.com/revi ... Gakki/10/1
The reviews on the G120A - include a mix of old Japan and newer Taiwanese...
http://reviews.harmony-central.com/revi ... G120A/10/1
There are some very late 60s and 70s Yamaha acoustic catalogs at http://www.t-shiga.com/sub7-5-1.htm
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