Dating yamaha guitars by serial numbers
I also recorded the link of where I found the data, just in case I had to go back. A few curious people I’ve asked have found date codes inside their guitars, but I can’t expect many people to go that far.
Which I have many times, as I’ve found more changes and differences. When I find vintage FG’s locally on Craigs List I will ask if I can see the guitar and take pictures. After recording serial numbers for a couple of weeks, I realized I could probably figure out when the various labels changed, based on the pictures on the pages I saved the links for.
But the 6 & 7 digit numbers (located on the neck block) are just sequential numbers used by all the guitars they built, not just the FG’s.
I’ve also found there are internal date codes that will reveal when the guitar was made. Date Code located on one of the interior sides of the guitar.
My latest interest is decoding the mystery of the 6 & 7 digit serial numbers.
So I started searching and asking for serial numbers and date codes and putting them in a spread sheet. He also has a website (in Japanese) dedicated to the FG-150.The most common Yamaha serial numbers follow a system that uses 2 letters, followed by 5 numbers. The letters H to Q each represent the number that the year the guitar was built in .