Based on what the pictures reveal, you have, what might be, a sixties something Legnano Grand Premio. The Grand Premio was second from their top of the line offering. I say might be because the pictures offered are not what I need to help determine actual model.

Send us a picture of the drive side of the bicycle, taken square on from the side. Also, send pictures of the derailleurs and of the drops-outs(where the axles pass through the front and rear of the bike). Armed with those it will make identifying the bike easier.

In my mind, the bicycle has collectible value, even though they are not the most sought after of Italian road bicycles of that era. Without knowing where you live or how good the condition of the bicycle is and where it is located, estimating value will be difficult.

Have a look at my Legnano GP for detail comparison and try to determine if the rear drops have the word Campagnolo stamped into the face. If so, then you have a GP for sure...