.
...also, that bicycle has a standard seat lug, not the unique seat lug and binder bolt that was a Legnano trademark.
If you look at that timeline link, it is either a lesser model (unlikely), or it is post 1975. I don't know which model that is, I'm not expert enough.
The Reynolds frame tubing argues for a better, Roma Olympiad model.
It might have a sticker or decal on there someplace that says. Seems to have a sticker on the headtube, rather than the Legnano head badge.
That also hints at a later bike. I think the collectors more highly value the ones with the metal head badge.
But your bicycle as pictured does have Universal 61 brakes, so '72 or earlier by that. I really don't know what it is, in terms of dating it.