Hi Kai,
thanks for the comment.... yes, you're right, I got this from one of the "Dutch" auction site
the blade are Bugis, from "LUWU" origin/style, with Pamor kalla (Pamor kalam)(eng: PEN)
But this type of BADIK spread in almost nusantara archipelago, specially in Java and Sumatra....
and maybe, like you said... the scabbard silver carved has similarity with Sumatra work.
Thanks again Kai.