Nice kampilan and Luzon "kris"/sword. Great find.
I personally would use very fine sand paper in combination with oil or WD 40. Pineapple juice will do the job as well but the blades will get a rough and "grey" surface and you will need the sanding after this also. And the sanding will have the effect that the blade don't lose the antique look.
I have done it for example in this way by this blade:
http://www.vikingsword.com/vb/showthread.php?t=16673
Regards,
Detlef