Keris for ID and Comments

[Mickey the Finn]

It looks like it has perhaps suffered some sort of damage, perhaps by fire? I have a very similar one, which is definitely scorched and blackened at the end (opposite where the pesi goes in). I suspect that in my case, someone may have been carrying out some sort of test, I'd assume for synthetic/real bone or ivory. Is that cleaned up fire damage or artifact of some other kind?