The stem and maybe the bars are older, but the bike model is '89 Campione de Italia. The rear derailleur and wheels, which look mismatched, and I think the brake levers have been changed. Judging from the looks of the bar tape and dirt in other areas while it works it may need a good overhaul.
IMHO the '89 Campione de Italia while a nice riding bike fell a little short of what it could have been. Bianchi tried real hard to get an "all Italian" bike in the $600-700 range hence the Quattro group made up of rebranded parts from Suntour, Ofmega, Modolo and others. Personally I would not go much over $275-300 on this example because of the work I think it needs. That Cromor SuperSet frame should be a good rider but this is nothing too special.
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“One morning you wake up, the girl is gone, the bikes are gone, all that's left behind is a pair of old tires and a tube of tubular glue, all squeezed out"
Sugar "Kane" Kowalczyk