French (?) Schepeler stag horn navaja

[Sajen]

Dear members,

I came across this stag horn navaja, whose blade is marked Schepeler. It was very rusted and I've cleaned it recently, very well made blade and razor sharp.
I am correct that this navaja is French? Or Belgian maybe? Someone familiar with the "Schepeler" mark? Age guess?
Closed 16,5 cm, opened 29,4 cm.

When the mods think it belongs in the European section, please feel free to move it over there.