Originally Posted by
John E
I have owned two Bianchis: 1962 low-end Corsa, 2F51703 and 1981 mid-high Campione d'Italia, 1M9914. I thought the first digit was the year of production, and the letter was either the month (skipping I, "M" = December) or the fortnight (A-Z, skipping I and O).
My specialisima is coded 160753. I know that on bianchi's the higher end models were made in the bianchi factory with the lower end ones being farmed out to smaller builders. hence there being different date\serial codes.
here is a registry of serial numbers for more info. the 1960's higher models are dated like I was talking about.
http://classicrendezvous.com/Italy/B...a_registry.htm