I just bought this Bianchi Limited yesterday for a friend of mine. It's brown with a metallic flake in the paint. The photos are pre-cleanup. The guy I got it from purchased it from an estate sale and he said it hadn't been out of storage since the late '80s. There was still a Seattle ferry schedule in the bag from '88. It's in near mint condition and from the looks of it, ridden very little. Still has the Bianchi branded tire up front which looks brand new. I also noticed that where the pump had rubbed the frame there appears to be Celeste green underneath the brown...odd. It came with a working Silca Impero pump, Bluemel's Lightweight fenders, handlebar bag, seat bag, and some misc tools. I think I did pretty good for $155. Watch for a post soon in the Before & After thread.

I'm pretty sure it's an '81 because all the components date from around Oct '80 - June '81. All components appear to be original.
Also the tubing sticker says Bianchi CrMo Tubi _ _ nforzati. The first couple of letters are faded but I'm thinking it said Tubi Rinforzati. Is that the Bianchi designated Columbus tubing or Tange? (EDIT: Just pulled the fork and the steerer is stamped Ishiwata)

Serial # DS17374

Shimano forged rear dropouts with adjuster screws - date code EJ (Oct 1980)
Shimano forged front dropouts - date code FA (Jan 1981)
SunTour Cyclone GT RD - Date code XC (March 1981)
SunTour Vx FD - Date code XF (June 1981)
DiaCompe calipers - Date code 1180
DiaCompe levers - Date code 0181 for the lever part, 1280 for the hood section
SR cranks - Date code 80L (Dec 1980)
SR handlebars - Date code E81 (May 1981)
SR seatpost - Date code C81 (March 1981)
Ariake Jaguar II Champion saddle (81 & 4 stamped underneath)
SR Royal stem
SR pedals
Tange headset
Tange bottom bracket - Date code 81F (June 1981?)
Araya 700c rims laced to Suzue hubs