Bagobo, Blaan ? Your expertise please

[Marbel]

Hello,

Seeking your expertise please on this old blade.

The scabbard is wood, two parts, held together with original rattan and later-added string. The raised "block" holding the waist cord is not added on, it's one with the wood of the scabbard. Nice color, well worn.

The blade is heavy and sharp. Slightly loose from the hilt. The brass is very heavy with a smooth, worn feel. The last photo shows holes where chains (with bells) would have been attached to the end long ago.

So the question is - whose blade was this? The patterns on the hilt say Bagobo, the flared edge (without pattern) and the decorative holes might add Blaan into the mix and possibly (but not likely) Tboli.

Any thoughts and input would be very welcome. I'm far from an expert in this arena and seek your knowledge. Thank you very much.