Nice piece! I think the blade is older, say, early 1800s. I agree that it originally had 2 baka-baka and that the scabbard is Maguindanao. The blade could be, but it could also be Sulu (they did a lot of trade). The hilt, there was something around the top, perhaps a band of metal. It also may have originally had metal ferrul too, but this is now covered by the later wrap.
A nice piece. Good luck with the "power etching"!
