I got this hub in a box at an auction that i went to it was in with a bunch of 3 speeds. Anyway it is a Sachs Torpedo Dreigang thats what the brake arm has on it, then the hub itself says Torpedo Dreigang 515 36n. It looks like it should have an indicator chain on it like a Sturmey, But i dont know never seen one before, anybody got some clues. Sorry no picture the batteries in the camera are not good.