My first guitar was a Yamaha FG110 and I have been on a quest to find one. Plug in "FG110" and it will tell you the years it was produced.I had a white label and got it in the early 80's from a Pawn shop. They said other than a set up the guitar was in good shape. I have looked on a few websites and they have 63,73,83,93, 2003. The first digit of the serial number will give you the exact year within the range.
Dating your yamaha guitar
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The company began as a manufacturer of reed organs but eventually became the world's largest manufacturer of musical instruments. These guitars originally were produced solely in Japan, but over the following 70 years, Yamaha guitars have been made in Taiwan, Korea and Indonesia.
The serial number on one of these instruments is the best way to determine when it was created.
I don’t know for sure but it looks like these guitars can be dated by the chart above too.
Luckely these guitars normaly also have a pickup number that makes them datable.Called them they said the guitar just needed a setup.It looked good and 9 I have a 1973 Yamaha FG110. Search "Yamaha guitar archive" with a search engine.The SG-35 had parallelogram inlays, the SG-30 had dots. The SG-70 was very similar to the SG-50, but had a mahogany body.The ’74 SG-90 and SG-175 marked the debut of guitars that clearly can be identified as Yamaha SGs.The First Steps The Yamaha SG actually had its roots in two new solids that debuted in late 1973 – the Natoh mahogany SG-35 and Katsura-wood SG-30.