Wow, thanks so much for the welcome and replies, I shall try to remember about the freewheels! By offset I mean, the freewheel seems too close to the frame, and could be closer to the spokes, and I figured a six speed would be narrower and closer to the centre of the bike. At the moment, when it's in the smallest cog, it's maybe a mm away from the stay.

I'll take some pics, perhaps you can date it for me too, and thanks again, I am loving it, joining a club soon, as soon as I get a few long rides under my belt.