It is a Nuovo Mexico, not the original "Mexico" model. The vintage is correct, give or take a year. It is definitely a repaint, and the rear spacing originally was 126 mm.
Marc Boral
Mark Poore wrote:
> Just bought a Colnago on ebay that came from Italy. The seller said it was
> an '82. The top and down tube have a grove on both sides of the tube running
> the full length of the tube. The chain stays have a grove as well on the
> inside of the stay. This was done to increase stiffness I guess. The chain
> stays also have Colnago stamped into the outside of the stay and it is about
> 5.5 cm long. The frame also has some light touches of airbrushing. In
> putting the frame together I found that the spacing was 130, not sure if it
> was built that way or cold set to accommodate 8/9 speed. Looked all over for
> a serial number, but could not find any. Any help in IDing year and model
> would be of great help. Can send photos if that would help. Below is the
> link to the auction with a small photo of the frame as well as a sellers
> description.
>
> Thanks in advance,
>
> Mark, heading out on a 30 mile shake down ride on the Colnago, Poore
>
> http://ebay.com/