Dating yamaha guitars by serial numbers
I’m also collecting data on Taiwan made FG’s, up to 1981. If it has the old style “Reinforced Neck” truss rod cover.
That cover made it onto the earliest FG’s imported into the US, before changing to the familiar one.I’m also tracking the Green Label FG’s, the earliest models (1966-67) only made in Japan, that share the same pool of serial numbers.I’m looking for the transition between the Green and Red labels.Once I discovered the internal date codes I knew I could compare known 6 & 7 digit serial number/date code sets with other serial numbers and make a good guess as to when other guitars were made. 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.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.