It is worth twice as much as half
Mid 1980's
1977 to 1981, they were made in Japan
Most likely_Made in Taiwan
I bot mine new late eighties
No answer but..... You might try posting this question in a guitar or musical instrument section. I own a Yamaha FG-140 guitar. Great guitar, but I don't know how to relate s/n to production date.
14k fg wedding band
it worth about $ 100 or Yen 10000
These go for anywhere between $140.00 to $225.00 sometimes more. this is back when Yamaha was the best guitar to come out of the orient.
this could be worth around 100-300 pounds, depend what condition it is in. if your looking to sell a left handed Yamaha i would be interested email me at nathanmedcalf24@yahoo.co.UK
A Yamaha FG160 acoustic guitar was available in the early 70's, possibly even in the late 60's. To tell for sure, you may try contacting a music store with the serial number.
It really has everything to do with condition. If you want to have a serious conversation about this email me jbportico at gmail dot comI'm a fellow fg2000 owner.