I believe this to be from 1938 or 39. I personally have only seen two pre war 10/0s, this one and Butch's 10/0 "G" model double crank. I am sure there might have been others but that's what I have seen.
When I got it it reeled kind of stiff / sticky and it was packed with old black grease that had turned very thick headed towards a solid !!!
I am posting a bunch of pictures so enjoy !! And thanks ED !!!
Last picture is the 10/0 next to a 15/0 CT model.
Also notice the brown colored knob which looks original to me.
John Taylor














