CONGRADULATIONS ON A UNIQUE AND VERY INTERESTING BARONG.
THIS STRIKES ME AS SOMETHING A SHAMAN OR THE MORO EQUIVALENT OF IT,WOULD USE FOR HIS CEREMONIES AND RITUALS. IT APPEARS TO HAVE SEEN A LOT OF USE IN ITS CURRENT FORM BUT NOT USE IN BATTLE. SO IF IT WAS USED IN CEREMONIES THE SHAMAN APPEARS TO HAVE BEEN SUCESSFUL AND POPULAR.
I SUSPECT THERE WERE SHAMAN WORKING ALL OVER THE PHILIPPINES BUT HAVE NOT READ ANYTHING ABOUT IT SO JUST CONSIDER THIS CONJECTURE UNTIL SOME GOOD REFRENCES ARE FOUND.