I wouldn't even bet on it being SL. The 1987 catalog shows the Dolomite and Veneto with this sort of a fork crown, though neither appears to have a braze on for the front derailleur. The Asolo has the front derailleur braze on but not the same fork crown. I'm guessing it's one of these models from a different year, but still late 80's. The paint may be original, but the decals likely are not.