Origine of Bugis Keris?

[Athanase]

Hello,

I am looking for the origin of this Keris. The scabbard is very similar to those I have from Sulawesi but it is not the original one that has been adapted for the blade... (I had never seen this method before)

The blade is unusual for me. I only once saw another similar old blade on the internet on a Bugis keris but I do not remember where.
The strangest on the blade is the Sogokan that seems to have been added afterwards but it seems old because this part is also eroded.
The handle is also quite different from what we see most often.

Thanks for your help.