[CR]SR/NR odd size cranks date code

(Example: Framebuilding)

From: "Feeken, Dirk" <dirk.feeken@sap.com>
To: "'classicrendezvous@bikelist.org'" <classicrendezvous@bikelist.org>
Date: Tue, 9 Dec 2003 15:33:24 +0100
Subject: [CR]SR/NR odd size cranks date code

Is it possible that NR/SR cranks in odd sizes (167.5, 172.5, 177.5) don't have the famous number in symbol date code, or that it is missing often? I've seen now the third set SR cranks in a row of such a size without the code, just STRADA and 172.5 or 167.5. I'm pretty sure they all date from mid to late 70s according to the bikes they were on or the stash they belong to. Or same question other way around: Are all NR cranks without the code the old ones (~1970)?

Dirk

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Dirk Feeken
Heidelberg
Germany