but that English BB would rule out a Guerciotti as well as most anything Italian...likewise French. To my eye the seatstay cap treatment looks "British", but not anybody specific. I'd venture a guess (pure speculation) that the main frame is 531 and that the fork might be a Columbus replacement: is there any rifling in the steerer? Here's my thinking: the long Campy DOs and lack of *any* braze-ons, the 126 spacing (original or spread from 120?) and the simple brake bridge for nutted rear brake say it's from, maybe, the mid-70s. Yet that fork does not have Reynolds blades (it's likely Columbus) and has a Cinelli-like crown though it too is drilled for nutted brakes that says late '70s to very early '80s. It's entirely chromed but the frame has none except for the dropouts. I'm prepared to be wrong...and I sure can't provide a name for it.