I have a frame that's 57 centre to centre, closer to 59 centre to top. The top tube is 57.5 centre to centre horizontal. It's apparently a Columbus tubed Italian frame but of unknown origin, resprayed in the 70s by Tesag Cycles in Switzerland. The paint is markedin places but still pretty good. No metal damage. Chromed forks and rear stays. Adjustable semi vertical dropouts. I bought it for the Duraace groupset that was on it. Happy to sell for £80 plus whatever it costs to post. 105 headset included (still good) but Duraace BB not included
Ron Spencer (Warrington) frame, he used local bike builders, I did track down possible builder but not possible to be certain, its built up at moment so you could try for size, PM if interested