I've been going through some of the older identify-my-Bianchi threads, and not getting much further except for one possibility. This bike looks a whole lot like the dark green tourer in http://www.bikeforums.net/showthread...ication/page10 , which is tentatively identified as a San Remo.

Please let it be a San Remo. Then I won't have to worry about the Randonneur fork recall from 1990!