How to identify a Colnago Nuovo Mexico from a Colnago Super (profil)

I get a fair amount of requests to appraise vintage Colnago roadbikes,(which is always a pleasure), and amongst those fine steel steeds have been a number of  questions regarding the Colnago Nuovo Mexico model, (circa 1984).

More often than not the owner has one of these, which were more common, the Colnago Super (profil), which can be identified from one crimp either side and center on the top tube, one either side and center on the down tube, and inside the chain stays

colnago super profil

a Colnago Nuovo Mexico has two crimps either side and center on the top tube, 2 crimps off center either side of the down tube (so dt has 4 crimps in total!) , and none inside the chain stays

colnago nuovo mexico

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