Hi Michael ,
I based my initial opinion on the blade and its shape and decoration .
Is that brass ferrule really thick material ?
Often large Kampilan were bound with heavy iron bands .
Usually kampilan blades are inserted into a cut in the hilt so they need lots of reinforcement to take the stresses of use ; thin brass IMO wouldn't really do the job too well .
It's a bit of a puzzle ; could the bands on the handle possibly be silver ?
Fancy blade and a fairly plain hilt makes me scratch my head a little ; it seems incongruous .
The hilt does look genuinely old though .
BTW great spear that you got from Lew !