I have just looked at the Berthet pedals on ebay and they look just like what I have always thought were Lyotard 23's. Am I guilty of bad information or are 23's just very similar to Berthet's? What I have always called 23's were my Favorite pedals and I have several pairs. Very easy to use.
Paul Patzkowsky with a beatiful 65 degree no wind day for a ride in the foothills