I had thought that this style of blade from Burma was somehow related to Japanese swords. It seems to be closer to them than the dha/darb styles in the immediate surrounding area.
Could be wrong though. I keep finding out how little I know about Dhas and I certainly can't say I know anything about Japanese swords.
This one is smaller than the others I've seen. It came with a big brother though. A near copy, but larger. I was told that one of them was used by a female guard. I didn't/don't think it was possible at that time in Burma. Given the state of women's rights at the time. But maybe a female guarding another important female?...