I knew I had seen this style of hilt before. Sorry for the bad pictures. If I get a chance, I will replace the first one. There wasn't natural light yet. Here are two pages from Cato. I know the point slopes the wrong way, but could this be from the bangkung family, posibly with an influence from the Northern Philippine states? The example in the original post has a mouth the to me looks like a stylized crocodile.
Whatever it is it was a good find. The sad thing about living faraway from cities is that I never find anything like this
