Origin of the kampilan?

[fernando]

Hi Bill,
Some guy from my home town is now running an exhibition on Fernão Magalhães (Ferdinand Magellanvs) biography and his earth circum navigation.
One of the illustrations shows the Portuguese captain being eliminated by the Lapu Lapu chieftain, after being weakened by an arrow in his leg, among other wounds.
I wonder what is the age of this picture (painting?), and from where he did get it. He doesn't remember it either. But he promised to search his stuff and tell me.
I think this is a sugestive depiction of the weapon used by the native leader ... at least in the author's imagination.
Fernando