Another thing, traditionally, the Malay's do not etch/stain their kerises with warangan (arsenic trioxide). They leave the blades in the 'raw' state pretty much like what this keris currently is (though this blade is a lot smoother due to steel-woolling, no doubt). Not a bad thing actually; its easier to clean, and is less prone to rusting.
To 'restore' it to its 'original' state, just dip the blade in vinegar for about 30min, then wash with a lot of soap. But the blade is really nice as it is, so personally, I won't do it.
