Hello Jose, I agree on the hilt looking rather non-traditional for Bagobo because of (as you pointed out) the lack of motifs and the smooth finish, maybe someone looking for something different? As for the blade, it looks to be of a V grind and not the traditional chisel grind found on most Visayan blades. Maybe some Bicol influence? A very interesting piece, I just wish I could locate that lost photo I have somewhere but it might only just add to the confusion.
I have added a photo of the two hilts together for better comparison. I just remembered seeing a couple of Moro swords with this cutlass style blade. Time for me to start looking through the older posts.
Best,
Robert