Indonesian Dagger ?

[A. G. Maisey]

Thanks Gustav. I got the "sang" bit right, anyway.

I have forgotten the 'buntut mimi' name entirely.

Interestingly, the BI word for "bayonet" is "sangkur", and this item under discussion has a similar triangular cross section as 19th century French bayonets.

EDIT

Not 20 years since I've seen one, only 16.