[CR]Undated NR rear derailleur

(Example: Framebuilding:Restoration)

From: "David Bilenkey" <dbilenkey@sympatico.ca>
To: "Classicrendezvous" <classicrendezvous@bikelist.org>
Subject: [CR]Undated NR rear derailleur
Date: Mon, 21 Oct 2002 10:29:49 -0400

NR rear derailleurs are introduced in 1967, and have only PATENT stamped on the top with no date correct? What year did they start putting the date on?

Thanks,

David Bilenkey
Ottawa, Ontario, Canada