Really, it was just the fact that you referred to Chater-Lea as making hubs from this era that gave me the idea that my ones could be or the 20s/30s eras, I don't have much knowledge in this area myself. Although I believe that alloy parts (and stuff in general) became more popular following the war years, although I could be wrong. I also have a wheel with a BSA hub and possibly other separate hubs that could very well be 20s/30s eras, but it seems like you're after matching pairs, and also you'd need to find out if my hubs are old enough as (again) I only have a vague idea myself.