The letter "H" is used for years ending in one, beginning with 1961.The next nine letters of the alphabet correspond to years ending in the next nine numbers.
I called Yamaha, and the voice at the other end told me it was a grey-market guitar, never sold in the US, thus they would not have that info. : thanks, : vince I have had a Yamaha FG-140 for some 30 years which places build date around 1972-3. : : Hi, : : I'm trying to find out what the build date is for a Yamaha FG-140 I recently bought, # T0085566. The serial number on an FG 140 is usually on the first brace you see looking through the soundhole towards the neck. Yamaha actually reuse numbers every 10 years so its up to you if you think its 62 or 72, I have two both dated as 1972 according to the Yamaha american website. : Hi, : I'm trying to find out what the build date is for a Yamaha FG-140 I recently bought, # T0085566. I've been told my guitar was made sometime in the '60s. Any chance you can look inside and find those numbers?
They don’t always agree with Yamaha’s Guitar Archive data. This article will be updated when I find further information.
What got me started was a curiosity of what the early (1966-71) Japan built FG 6 & 7 digit serial numbers meant. I found a Japanese guy on Youtube who made videos of himself playing many early FG, and he mentioned the serial number and date code most of the time.
Getting serial numbers with the matching dates code allows me to tell people when other guitars where made, and also what serial numbers where used in what year.
This serial checker supports Epiphone, Fender, Gibson, Ibanez and Yamaha however not all serials will produce a result but it's a good place to start if you are trying to find out more info about your guitar.