I purchased this bike a few years ago, used, from a bike shop. It's a Bianchi Strada LX. I've made several changes to the bike. Added a triple change ring (from a double) and new cassette on the back, with a granny gear (plenty of hills to climb), six sprockets. Also bar-end shifters, from the original ones on the down tube.
The frame is steel.
Was thinking about buying a new road bike next spring, but someone told me this might be a valuable frame.