I found a more pristine image of the tube decal.Hello Brian and to the forum.
Not much of an expert on Colnago I'm afraid. Can't read the Colombia tubing decal as the pic is not clear.
Looks like a lot has been changed on it.
What is the numbering under the BB. Might not tell you the model but should give you a date, I'd say looks to be eighties.
Nice bike, what are your plans for it?
It does have the Colnago cut out on the bottom bracket
The decal should state the type of tubing used so maybe it's a respray one?
It's not a sport, I used to have one and it was rather heavy. Aele tubing.
Any BB numbers?