Originally Posted by Gary Fountain

I'd suggest an approximate build date being 1985 going by the rear stay caps. Unfortunately serial numbers mean very little on Colnago's so it's difficult to pin the build date down. I reckon it's some derivative of the 'Super' range - perhaps a Mexico. I don't think it's a Nuovo Mexico as the seat stay caps don't appear to have a concave face - it looks like the face is flat.

Components could very well have been added to a frame which doesn't really help identifying the build date. It was quite common to buy a frame and add your components.

It is also difficult to develop hard and fast build features to assist frame identification with Colnago's of this vintage as they may have been built in another frame shop or built for another market.

You do have a nice bike though with quality components - a high end bike.