My Official, educated response is that that is the insignia of a top secret swiss special forces unit!
I received a package today from Switzerland. It's an 84 soldier. In the normally blank square on the scale it has an engraving or stamp. In the picture it is next to my 82 soldier. My question. Is this an after market engraving or a factory one. If factory what does it stand for?
It's a WaffenKontrol mark. Basically it's the only real difference between an issue knife and a regular Soldier model. It is an armorer's stamp, meaning the knife was actually issued.Def