Originally Posted by
satbuilder
Tubing on Mexicos, from what I remember, was a mix of Columbus KX and KL, where the Supers were SL. The Mexicos were lighter weight than the Supers. Not sure if that trait was carried on in the later models.
From the limited info I've been able to find, the later Mexico's kept the lighter tubing. In the early 1980's, they added the Nuovo Mexico with the crimped top and down tube (Profil) after complaints of frame flexing on fast descents with the regular Mexico.
Style-wise, Mexico's and Super's all looked the same for their respective years from photos I've seen. Of course as with all things Colnago, I'm sure someone knows of instances where they were different!
I think the only way the OP will be able to determine if it's a Mexico or a Super will be to weigh the stripped frame.