The Colnago Mexico bicycle was released in the early 1970’s to celebrate the 1972 Eddy Merckx world hour record. Whilst it is difficult to determine exactly how long the Colnago Mexico was in production, but there is a gold plated Colnago Mexico Oro still advertised in an early 1980’s Colnago brochure.
Before you start with the identification process, you should start here;
How to identify a Colnago vintage bike.
Special features of a Colnago Mexico.
The Colnago Mexico is almost identical to the Colnago Super in appearance, but the Mexico was built using thinner Columbus Record tubing which resulted in a lighter frame. According to the chart below, a 58cm Colnago Mexico frame & fork was 170 grams (6 ounces) lighter than a smaller 57cm Colnago Super frame.
Visually the main difference between the Colnago Mexico and the Colnago Super (of the same era), is the Colnago Mexico has round/oval chain stays, whereas the Colnago Super has indentations in the chain stay tubing for both tyre clearance and chainring clearance. As you can see in the following images, both the Colnago Super and Colnago Mexico featured a chain stay bridge.
Images courtesy of speedbicycles.ch
Chain stay indentations of a 1970’s Colnago Super.
In the following image you can see the indentations that were present in the chain stays of a Colnago Super of the same era. Image courtesy of vintagevelo.co.uk
The following excerpt below is from a USA Colnago dealer catalogue (1981).
Colnago Mexico Oro.
The Colnago Mexico was produced in both regular painted colours as well as a limited edition, fully gold-plated version known as the Colnago Mexico Oro. One of the first Colnago Mexico Oro’s was presented to Pope John Paul II by Ernesto Colnago. The bike was later returned to Colnago and added to the Colnago Museum. You can read more about that on rouleur.cc
The following websites have a large selection scanned Colnago literature including reviews, catalogues and brochures.
I hope you found this article interesting. I have listed the following website pages as general references.
Please remember that this information is only to be used as a guide.
I consider myself an enthusiast, not an expert. The information I have presented in this article is based on my many hours of online research.
In addition, there will always be frames that don’t quite match the characteristics of a particular model as they could have been a custom build, prototype etc. Note: forks can also be swapped between different frames.
I welcome reader feedback in the comments section. Should you wish to suggest an amendment, please include a note advising the source of your information so that myself and other readers can ascertain the accuracy of your information. Note: Trolling or argumentative comments will be removed as they are counter-productive.