Hello,
On first impression I would say Nepal as well, a hansiya ("hanshee" - what lambendh khukri used to be mistakenly called).
The handle brings to mind Afghan work on choora and lohar. Perhaps a border piece
The construction on this piece is very odd. The blade's orientation seems to be 90 degrees off and its connection to the hilt is even stranger. The hilt has a strip running along its length as if to emphasize it is made of two scales, and yet there is a nut on the but as if the tang is screwed all the way through. Would be nice to see this taken apart.
Given that only the top part of the hilt is decorated with brass, and the blade is so oddly attached on the underside, it seems to me that it was carried or showed off in this manner, not actually held and used...speculation.
Here's a pic of a hansiya, note the finely serrated edge.
All the best,
Emanuel