Hi Guys,

I'm talking with a guy selling an early 1980s Colnago. This would be my first steel frame and first vintage bicycle.

From the pictures, it appears to be a Super, though it may be a Mexico or Master - I'll know better when I look at it tonight.

It is my understanding that the Super has a rounded top tube, the Mexico has an indented top tube and the Master has a squared top tube, and that is the way to tell the difference.

Anyway, any advice you can offer on what to look for when purchasing old Colnago's would be appreciated.

Thanks,
James