My Bianchi Specialissima came original to me with a black Brooks B-17 Competition Standard dates 1962 and with Campy large flange alloy hubs with lockring dates of 1963. The seatpost is 27.2mm. It has the Campy dropouts with the "Sport hole" on the drive side dropout. The serial number is 160682.
The frame has been re-done by Baylis and is pictured here:
http://www.velostuf.com/
John Barron Minneapolis
>From: Mark Bulgier <mark@bulgier.net>
>To: "'NortonMarg@aol.com'" <NortonMarg@aol.com>,
> classicrendezvous@bikelist.org
>Subject: RE: [CR]Dating old Bianchis
>Date: Wed, 27 Feb 2002 00:36:31 -0800
>Duane Kennard said about his Specialissima, "I'm guessing it was made
around
>'64-'65. Serial # is: 164124"
>One I saw on eBay said "I was told this bike was built between 1961 and
1963
>based on the graphics, but I can't say for sure. [snip] Serial
#1614929"
>I figger mine also is probably from the same range of years, seller
said it
>was a '63 and he was the original owner, but I think it may be a bit
older
>than that. Serial # is 160320. Mine has the hole in the dropout for
the
>"Sport" derailleur.