Hi,
I have a mandau with almost the same decoration in the blade as you have.
(I don't mean the brass or copper inlays).
I enclose some pics.
According a respected collector my mandau comes from Borneo in the area at the border of Sarawak / West Kalimantan.
But I have to say, I don't know if the same decoration of our blades, means the same area of our mandaus.
But maybe someone else can give an answer at this question.
