My base model E.1.51 celeste Pista says made January 1981 on the gold sticker and has downtube decals in the same style in blue. On the underside of the BB the serial # is 1B0929.
A few years ago I attempted to source the downtube stickers in that style through a Canadian Bianchi dealer and was informed that the replacements were still available at that point in time from Bianchi in black only. I decided to live with the patina of the originals.
Marcus Coles
London, Ontario, Canada