Golok perahu nangkup/ujung turun perah pariaman

[naturalist]

One of my latest
It needs TLC, all in the original set.
Based on the information of the previous owner, this style of "sandangan" (sheath and handle) is Sunda Galuh style (Majalengka, Tasik, Ciamis regencies West Java).
The sheath is wrapped with rattan, the butt is from a horn.
The handle is pariaman from an albino water buffalo, and the style of handle carving is trawangan carving style (not sure trawangan refers to, does it for a name of a place or something else).
Blade is perahu nangkup/ujung turun.
Definitely older than my grandpa