Originally Posted by
Deerman
Bianchi serial number of the day: 63f023t 290 - any comments? The first part looks like a "generic" type serial number to me - randomised and containing no information - other than that it is unique to the bike. Also what does 290 mean? Seems the bike is from 1994 based on my reading of other threads?
63 is likely the frame size, in centimetres.
290 could be a part code for the BB shell itself, as it's in a location where it would be covered by the cable guide. If you see it on other shells of the same style and era, that would raise my confidence level.