I would say it's sometime in the 80's; definitely not older than that.
La Mesa, CA
I recently purchased a Colnago track frame on eBay. Being used to Paramounts, I know how easy they are to narrow down to the month/year they were made including other identifying factors. However, I have yet to find any concrete identification for Colnago. Could someone help me gather some information about this frame? Any info is greatly appreciated. Here's a link to the photos:
United States of America.