It's definitely an Italian frame based on the serial number format. It was also manufactured in 1983 but could be a 1984 model. It's got dropout eyelets, so it's one of the lower level Italian models, no higher than a tre tubi Columbus SL frame, which during this period would be a Nuovo Racing, at best. However, the Gran Sport rear derailleur, if OEM, suggests something slightly lower. What is the seat post diameter?
Edit: I just noticed that the post says 27.2mm. That's pointing to a tre tubi Columbus SL frame
Last edited by T-Mar; 02-26-19 at 03:33 PM.