It is very hard to follow the French thread using Google translate. For sure it is made in Germany at Solingen. They seem to have a good reputation in that thread. For a real wild stab in the dark at who the maker is, I'd say the name Kabrand could be a mix of two names for the makers. The Ka part standing for Karl and the last bit for his partner's name or his last name. Oth it could be just a brand name for someone.

You might find it in this list if you get lucky.

https://www.archivingindustry.com/cu...azormakers.htm

Bob