Late to the party but, yes it's a Colnago imo (and I have seen a few) , what model, hard to say. Original paint, I would guess yes. Some of their paint jobs.... Beauty is in the eye of the beholder. At 600 up to 700 euros buy, at 900 euros sell, unless you can find out more about the model and provenance than we know now. That's my range. Cheers, Eric