Qs on this Bugis(?) type keris

[Green]

I have a few questions on this keris which look like a Bugis to me which I hope some of us here can comment and give opinion on.

1) The hilt : what is the material made of?... looks like marine ivory?

2) The blade: looks like a spokal (sapukala) but rather a poorly made one ? or is this another variation of spokal blade form?

3: Dress. The gandar(batang serunai-Malay) is covered with brass wire. I've not seen this ornamentation of Sulawesi dress before. Is this a later addition , perhaps outside Sulawesi? (I know one collector here who did this kind of decoration with golden threads to part of the gandar but never completely).

4: Origin: Is it Sulawesi Bugis ?

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