Here are pictures of the one I mentioned yestrday. The okir work on the scabbard is similar to okir work on the blade above, and the "naga" hilt is well defined. The scabbard also has a similar "fish tail" tip and drilled piece of wood for a cord to suspend the scabbard from the waist.
As I mentioned before, this one comes from Lanao del Sur in the heart of Maranao country. It was probably 10-20 years ago -- I picked it up in the mid-1990s.
Ian.