Colnago Model Identity

[Nikond300s]

Hi

Can anyone help with identifying my frame?

I think it could be a Mexico, Master or Supreme.

Here is what know:

Clover leaf cutout on bottom bracket shell, downtube lug, and rear brake bridge
Classic Colnago fluted (crimped) top tube and down tube
Campagnolo dropouts (chromed) - stamped with frame number Q389
Chromed chain stay
Fork is carbon

Thanks!

[BacDoc]

I know very little about Colnago bikes but the top tube cable routing is consistent with the Mexico.

I'm researching Italian steel frames to find origin of my bike - fascinating stuff!

[Nikond300s]

Thanks BacDoc - some of the old Italian steel frames are beautiful.

[Cinelli 82220]

D'oh! Never mind

[Nikond300s]

Colnago have just confirmed as an early 1980s Mexico.

[lionsll]

Mexico frames ever Rules!!

[SJX426]

Clearly the fork is not original. Supers often did not have chain stay bridges.