Strange Mendak on Yogyakarta Keris

[Athanase]

Hello

Here is one of my new Kriss (My First with a Yogyakarta hilt).
The blade measures 37cm long (9.5cm wide for the Gonjo).
Unfortunately there is no scabbard.

The brass mendak/selut? is of very unusual shape and with very poor finishes.
This is very strange as it looks old, but its quality is worse than the blade and handle.