Joined: Aug 2015
Posts: 1,428
Likes: 754
From: Kingdom of Hawai'i
Bikes: Peugeot, Legnano, Fuji, Zunow, De Rosa, Miyata, Bianchi, Pinarello, Specialized, Bridgestone, Cinelli, Merckx
[MENTION=192351]littlebeetle[/MENTION] You have what appears to be a very nice little De Rosa from sometime in the early 80's.
The Dura Ace AX rear derailleur is from the early 80's but the rest of the Campagnolo components may have date codes stamped into them that would indicate the year.
I couldn't quickly locate a catalog image with your specific model, but any authentic De Rosa is a bike worth holding onto.
The "T" pantograph on the chainring probably means something...but the experts will be along shortly.
Looks like a great bike that will clean up very nicely.