

Hey all.
Recently grabbed my old Mongoose from mums garage and going to clean it up.
I got it from my cousin when I wad young. It is a March ’81 model (momth the stamping changed) that had the Tuff 2 wheels on it.
Does anyone know how to distinguish between Tuff 2 and Tuff 2 graphites?
They are stamped with Skyway and have the patent and serial numbers stamped.
Hub on rear for a coaster brake as well.
Thanks.
by Timmay13