Rabab,Vietnam. approx. 33"x6"x1.5"  Beautiful carvings yet very strange to have a bowed string instrument without "acoustical chamber"never seen it played before.

It has 2 strings and the bow is in between them, pulling to one string or pushing to the other, or a little of both...

Has a very soft sound that can be "amplified" while resting the end on an acoustical chamber like a drum head , a barrel or a gourd...