The head lugs appear to be the same ones as used on the Norman Rapide ca 1950:




I've seen photos of a BSA Tour of Britain with the same lugs, and also a Carlton of some kind, all from the early 50's. I don't know who made them. The fork crown is reminiscent of a Brampton crown:


I don't know how you'd fit the oval (elliptical) section fork blades into the d-shaped crown. Anyone want to enlighten me on that?

I think it's a cool set, but it seems to me it should be at least three separate lots: the lugs (including stay caps), the dropouts, and the tube set. The fork crown and fender eyelets should probably be separate offerings as well.