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I am back, wow what a Bible. That's a great thread. So I guess the above pieces are Chavet 253/8 made by the cooperative?
I also learned that one piece knights with glass eyes are also Chavets.
Merci ! That's right: a 253/8 from Chavet ;-)
The functioning of the cooperative would still deserve some research and explanations. The organization of work around chess sets in Dortan is really particular. But there is no doubt about the origin of your set.
@WalterBiensur
I am hoping that this set 'LeTanneur' fits your Chavet family description.
I am hoping that it is interesting to you as thanks for all the work you've put into your love of Chavet.
I was lucky to get this as my first glass eyed knight set.
I will take better photos if you wish.