Ferguson and Henk, thanks for that information, I think I am going to be taking much better care of the sword. My father purchased it on a whim from someone while visiting some waterfalls (called Mahayhay) in Luzon somewhere south of Manila (I think not far from mount Makiling), its not a destination that is known by tourists or even most locals. I dont know who he bought it from, but I believe it was just some random person (who was probably using the bolo for utilitarian purposes), not at a shop or anything. He bought it for what would be considered pocket change in western countries, so I never realized that the sword was a true ethnographic weapon.
I cant actually remove the belt hanger because the scabbard (?) is composed of two halves held together by the belt hanger. It used to be really dirty (packed with mud and everything) but Ive cleaned it up.
Heres a picture I took of the waterfalls near where the sword was purchased:
http://img84.imageshack.us/img84/8968/ss101717byc9.jpg
BTW, thanks for lightening the picture, I dont mind at all, it does make it much easier to see the details.