are the red label and the light green label really different?

I played both several guitars.
There was some good one with red label.

The guitar made after 1972 seems just like FG-170 green label’s sound,I feel.

Before then,FG-150’s sound have the same tendency.

The guitar made in 1967 from 1966 is made politely.

I think it’s also fact that there is hit or miss after a guitar starts to be massed produce.

Anyway, it has passed for more than 40 years, so I think as expected, how to be treated an individual is also big at the end.