[CR]Old B.17 question

(Example: Framebuilding:Tubing:Columbus)

From: "J.Dunn" <bikehunter@icehouse.net>
To: <Classicrendezvous@bikelist.org>
Date: Wed, 16 Jan 2002 19:17:20 -0900
Subject: [CR]Old B.17 question

I have an old B.17 Competition Standard. On the frame is stamped: A60 It is my understanding that the 60 is the production year. But, I have also seen "B" and then a number. Once it was B72 causing the seller of the saddle to call it a B.72, but it was another model. My question is: What is the significance of the letter, A or B, stamped on these 60's era saddles?

Thanks in advance for any info. John Dunn in Boise