Green Go / Sassy Grass Green

FJ6 was available in 1970 and 1971.

"F" indicates the formula was originally used in 1970.

If the first letter changed, then the formula changed.

EB5, GB5 and KB5 are good examples of this. All different.

OP should get a shop to color match with their camera.

That works GREAT and accounts for wear and slightly off mixes.