Originally Posted by Gary Fountain

Yes that's similar but the frame in the photo has crimped tubes - You can see the crimp in the top tube and it is probably a Colnago Nuovo Mexico Profil - these bikes were used by the Del Tongo team around 1983 and were made famous by Bepe Saronni - World Champion in 1983. Yours doesn't appear to have crimped tubes like the one I own. The Mexico / Supers of that era didn't have crimped tubes.

Your frame has a sloping front fork crown which I think was introduced to the Mexico range around 1983.

I have enjoyed the following website as it is written by a well known bike enthusiast - Ray Dobbins:

http://www.raydobbins.com/misc/Colna...go_catalog.htm

In Ray's explanation he refers to this page:

http://www.bikeforums.net/classic-vi...additions.html

This site may be of interest too:

Colnago Gallery

And there is a great Flickr site that looks at classic bikes with lots of Colnago's:

https://www.flickr.com/groups/1368725@N23/pool/