Hello Detlef, If I were pressed to put a name to it I would call it an Itak and would put the age to late 1800's to very early 1900's. A great piece and I believe it will clean up very nicely. I too was watching this but had to make a choice on what item to bid on and the silver fitted knife I posted the other day won out.
Congratulations on this very beautiful addition to your collection.
Best,
Robert