Damn it, I just went back to the town where I used to live and was wandering round the streets with a half hour to kill.
I saw an amazing Casati bike, steel frame with delta brakes and record kit with custom paintwork and pantographing. It had little slots cut into the top of the seat stays near the seat cluster, one of those tiny details that make Italian frames so nice. I think it was even my size. Almost certainly the nicest bike I've ever seen on the street.
It was locked up with a crappy plastic lock like you'd find in Halfords, with a couple of other student bikes piled on top of it. Painful to see someone neglect such a nice bike like that.
Sadly, I didn't have a camera. Neither did I have a paper and pen to put a note asking if it was for sale