[CR]Rear brake caliper mount-dates?

(Example: Humor:John Pergolizzi)

From: "Richard Olson" <timeflies1955@msn.com>
To: Classicrendezvous@bikelist.org
Date: Wed, 11 Jul 2007 20:17:02 -0700
Subject: [CR]Rear brake caliper mount-dates?

Hi all-

I'm trying to get an approximate date on a Guerciotti frame I recently purchased. The rear brake caliper bridge is set up for the old style nut. Any ballpark date that Italian frames went to the allen head insert for affixing the rear caliper?

Thanks in advance,
Rick Olson
Rhododendron, OR