[CR]Notched versus splined freewheels-when?

Example: Racing:Jacques Boyer

From: Cino1947@aol.com
Date: Tue, 28 Oct 2003 19:18:15 EST
To: classicrendezvous@bikelist.org
Subject: [CR]Notched versus splined freewheels-when?

When did Atom, Maillard, and Regina first come out with splined freewheels? Were there years that they made both notched and splined? I need to know for restoration of a late 1960's PX-10 and a 1972 Holdsworth
Josh Berger
Bronx, NY