I have an NOS Simplex Mod. S001 T/P rear derailleur that I'd like to know more about. Is anyone familiar with this model? It has stamped metal wrapping over the Delrin on the outer arm of the parallelogram with a stamped "Simplex" over a background crosshatched pattern. Short steel pulley cage and came with a hanger.
Age? Grade?
Charlie Young
Honeybrook, PA