Is there any identification on the dropouts of who made them? I would be suspicious about the claim that it is a 1979/80 bike, all the parts on it are definitly much newer than that. The plastic cable guide on bottom of the bottom bracket and the overall paint scheme are atypical for such an old bike. Aside from the columbus tube sticker, it looks more like a late 80's japanese sport bike that someone tried to disguise as a european racer.