Hi. I've been trying to wrap my head around the keris/kris/kalis/sundang for several years now. Thanks to everyone for their help! In regard to the arrowhead motif, it spread to Moro blades it seems. I know that many of these okir gunongs/goo'na blades are considered almost contemporary and tourist items but, I thought it interesting to consider how the arrowhead design evolved.
This item seems to show use/wear, and the blade has good patination. Look at the worn plating on the bottom of the guard. The wear made me wonder if this is its original ferrule/pommel.
Hopefully I am somewhat on target with this idea.
-IP