For those of you who have become fixated with Cinelli and believe that
you have understood something about serial numbers or other build
characteristics that can assure a particular build date or period, I
believe this bike will blow all of your preconceptions away:
On this Cinelli, which I believe to be a variant of the 'B' it becomes absolutely certain that Cinelli did not build 'catalog' stock bikes, but rather was amenable to build everything to order. So you might as well stop trying to use today's logic to second guess the year of production of a given frame by serial number, or even build specifics. With less than 1000 frames being built in any given year, Cinelli would have been able to build every bike differently.
By the way, I am presently the high bidder on this bike but expect to quickly be outbid.