James.McLachlin Could you post a clear pic of the serial number? Is there any chance of a leading letter "P," possibly faintly stamped or maybe obscured by the cable guide?

In any case, I think this is a Revell 'Romany' touring frame with most of the original components replaced.










Even though the mystery frame looks like a repaint, it's actually the original finish, as it appears in one of their catalogs (not sure of the vintage of this catalog - the frame looks slightly different (no rear brake hanger)).



The lugs used here are Haden Royal Sovereign and the crown is the Europa model.

Revell used multiple sources for their frames, including Mercian, Dave Yates (M Steel/Joe Waugh) and Nigel Dean among ones I've seen mentioned. This particular Romany doesn't look like a Nigel Dean or Dave Yates to me, but whether it's a Mercian or some other contractor built frame, I wouldn't know.