Unusual Batak Knife from Sumatra

This knife comes from the Batak people of Sumatra. Most probably Karo Batak. Slim blade forged from laminated steel. Wood handle with forked pommel. large brass bolster of unusual shape. one piece wood scabbard with long protrusion to allowing to mount the knife on a belt. The scabbard is opened at the back to allow fast withdraw of the knife. The knife is held in position with a small brass lock.

Blade 10 inches. Total 16 inches. Very good condition.  Mid 19 C.