Blade SC, Shafts: Buffalo horn,
  birch vril, birch bark, tin.
  Cases: Hand embossed rough
  leather  (my motive).

Surface treatment: Linear oil method 
and wax
Maintenance: Oxides on the blade are removed with chrome powder. Wood 
and horn parts are serviced with a 
little boiled linseed oil. Leather is 
serviced with leather wax.

Some simple rules: The knife is not stainless, which means that after use, the knife should be clean and dried dry before it is put back into the knife case. Let the back of the knife run along the inside. After a time of use, a gray surface on the knife forms an oxide that protects the knife. Black rust and red rust should be avoided, these oxides damage the knife. Use the fine eyebrow to tighten the knife.
Good luck with the knife.