I have 4 old steel tubed Weavers. Two have finger adjustable knobs,one is marked El Paso and one is marked USA. Of the other two,one is marked USA and has coin slot adjustments,the other is in El Paso being rebuilt and I don't remember how it's marked or set up. Other than the markings and adjustment differences they seem the same.
One of the scopes marked USA is a K6-F with finger adjustments and El Paso doesn't have the parts to fix it. Darn nice scope too!
As far as other scopes being similar,I believe the early Bushnell scopes were being made in Japan to Weaver specs at the same time Weaver was in El Paso. Saw one years back and it was steel tubed. Hope this helps.
til later
