I got this too, this was my grandfathers sheath for his knife in the field back in Hungary in the 30s.
Here's my Nagypapa's bicska (knife), my cousin gave it to me the last time I went home 10 years ago, it's a Gerlach pruner.
This was my Grandfathers knife, from 40 years ago. The last time I saw him, (I was 15 then) he used it to cut Kielbasa and smoked/cured meats in the pantry for our afternoon meals along with cutting up bread and onions and peppers to go with the ham.
This was the knife that originally went with the horn sheath.
My cousin found it in the basement and gave it to me as a gift when I went home.
It's gotta be over 65 years old and other than the pitting/character it's as strong as the day he let me use it to cut myself a piece of kielbasa the last day I saw him.
I hadn't even thought of that day or the knife in nearly 40 years now till you asked for a knife and bullhorn.
It says Gerlach Poland on the tang I'm not even sure what kind of wood it has for handles, anyone ever seen or heard of this brand.
The funny part, when my grandfather died 35 years ago his daughter in law threw it out and my cousin who's my age (56) garbage picked it and saved that and his Bull Horn that he used to keep his sharpening stone in and hanging on his belt for sharpening his scythe when working in the fields, the horn has to be 100+ years old.
Three more pictures to finish this story:
First is the horn my grandfather had that he kept the sharpening stone and knife in:
Here's a picture of my grandfather and 6 of my mother's brothers and sisters, if you look on his belt you'll see the horn hanging:
For the old folk with bi-focals here's a closeup:
I still have the horn sheath and knife, Here's the horn with a Laguiole my sister in law gave me.
Knifeworks and a mantle clock.