Moki:
"I'm sure there are plenty of nice, rusty bikes you can get for 410 pounds. In fact there are probably some builders who can build you a rust-free frame for that much!"

Indeed! When I was thinking about buying a 1976 Mercian frame set I saw that Mercian would sell you a new frame for from about £500. But there's something about riding a bike made 30 years ago. And even something more about riding something that was in a state when you got it but is now beautiful again.