I just saw what I understand to be a "Gaucho Knife"
I am not sure if it is Brazillian or Argentinian, but it does have some prrofmarks.
On the back, is a Crown above the letter D, on the front is a F.G. in an oval.
My non existent spanish makes me think the seller was saying the Drown above the D dates up until 1912.
It also has the makermark Scholberg whish was apparently present in South America and Belgium.
Does anyone have any ideas?