Provenance and wood type of sampir keris

[Alam Shah]

Rasdan,
Your sampir is Ketengga wood. I've seen bongor wood, the grain is not like yours. It is normally used for batang (as mentioned by Dave).

Bongor wood have a different type of "tiger stripes" pattern.
(Click the underlined Bongor for an example).

(Note: Bongor wood is the one we've seen at your place).