Her mit den kleinen Franzosen- vive la France

[Arie Leib]

I cant imagine. But there is a museum, they may be of help.
Google Search (https://www.google.com/search?q=opinel+museum&ie=UTF-8&oe=UTF-8&hl=de-de&client=safari)

Abu

That's a good call, Abu. I'll try to contact them.