Crowns on Aceh weapons revisited

[asomotif]

I believe this thread was started to investigate the crowns on aceh weapons.
So to stick with the topic i have this Siwai that is in the "Wereldmuseum" at Rotterdam. The hilt is a really huge piece of akar bahar.

Ps. there are no sizes mentioned, but this one is in the exposition of the museum and believe me. it is huge. easily twice the diameter of a rentjong hilt.