[CR] Bianchi dating?

Example: Events:Cirque du Cyclisme:2007

To: <classicrendezvous@bikelist.org>
Date: Thu, 14 May 2009 12:59:51 -0400
From: <robertsasher@aol.com>
Subject: [CR] Bianchi dating?

Hello,I have a Bianchi and I am trying to date it,It may be off topic depending on this date so forgive me if this is true.On the drive side seat lug is 3 m and the other side is 1422.it is a tre tubi frame with Bianchi drops and fork crown and seat stay castings that say B and B with a circle.thanks for the help.Robert Sasher Atlanta Ga