Identification needed - Borneo ?

[erikscollectables]

This is a strange dagger. No idea what it is.
The cross piece looks european to me.
Handle is bone.
The blade is what made me think of Borneo.
Shaped like a mandau and with inlay that somewhat resembles mandau pieces I believe.

Inlay - two star forms at the top inlaid with copper.
One star at the bottem where the copper fell out.
Another star (?) towards the end.

Any input on what this might be is welcome!

Regards, Erik