I found a 1976 G10 former 1st aid truck with under 10 thousand original miles 3 Speed standard 250 ST 6 -- Any Value?
I will step right on out on a limb and say G10, that you Sir have the cleanest example on the Planet, of a rare, stock, factory original G10 surviving unmolested, from 1976. It belongs in a museum.
I do have one parking spot left...
Paint it blue, Tunerforlife Jason's backup Van!