[CR]When did stainless spokes appear?

(Example: Events:Eroica)

From: Tom Sanders <tsan7759142@sbcglobal.net>
To: <classicrendezvous@bikelist.org>
Date: Mon, 29 May 2006 17:42:21 -0400
Thread-Index: AcaDaMOOyh/X2Zb9TKWPzHzZb+W9pQ==
Subject: [CR]When did stainless spokes appear?

I just got a lovely set of 27" wheels (from a very nice CR Lister) that have stainless spokes. They are dated '68. Were stainless spokes used that
early?
Tom Sanders
Lansing, Mi