Thank you Mark for your great display and paper on "Overlay decoration on Burmese Dha Blades" at the Ethnographic Arms Seminar. I believe a similar overlay technique is used in Bali for betel nut crackers and ceremonial axes. Actually, both inlay or overlay techniques are used for the decoration of the Bali blades.
Here are some pictures.
You can view more at
http://old.blades.free.fr/other_indo/kacip.htm
http://old.blades.free.fr/other_indo/bali_axes.htm