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/bianchi1.jpg
http://www.velostuf.com/bianchi2.jpg

John Barron
Minneapolis