Sumatran Sewar?

[Sajen]

Originally Posted by David

I have also found the name Tumbuk Lada associated with these blades.

Hello David,
A tumbok lada (pepper crusher) is a different knife, blade and handle are bigger. See the picture from two examples from my collection, in up a tumbok lada from the Batak, in down a normal sized sewar.
See also "Traditional Weapons Of The Indonesian Archipelago" under sewar and tumbok lada.

Regards,
Detlef