[CR]Handlebar (and other) date codes?

(Example: Framebuilders:Cecil Behringer)

From: "Bob Hanson" <theonetrueBob@webtv.net>
Date: Sun, 27 Aug 2006 00:08:27 -0600
To: classicrendezvous@bikelist.org
Subject: [CR]Handlebar (and other) date codes?

Good evening folks,

I just picked up another "SR" (Sakae-Ringyo) Randonneur handlebar. Stamped on the bar is "C-76". I believe another one I have is marked "A-79" (sorry, not going to un-tape that one to verify). Would I be correct to assume that these would indicate March,1976 and January,1979 dates of manufacture?

Another similar puzzle is what I've been told are date code markings on Shimano 5-spd freewheels (probably from late 1970s to early 80s. These are not so obvious; they're marked with a 2 letter code such as "CF" or "DC". Anyone know how to decipher Shimano's old freewheel date marks?

In any of the above examples it's not a big deal; I'm not concerned with dead-on correctness for a pure accurate bike restoration with those components. But, I really do like to know exactly what I have mounted on any bike, whenever possible. So, appreciate any info.

>Thanks!

Bob Hanson, Albuquerque, New Mexico, USA