I cannot read the text, but that one (Lot 2822) does not appear to be a dha. I am uncertain as to the origin of the piece, nor am I certain it hails from Brunei or SEA at all.
It looks as if it is a compilation sword. The pierced ivory handle does, indeed, look like the work of Burmese or, possibly, Thai artisans. Mark has made a better study of these carved handles than I.
The blade, with its suggestion of a yelman, and the scabbard with two suspension rings, looks Ottoman in flavor, if not origin, to me. The apparant short length is puzzling, however. Perhaps in a mid-east style?
Interesting sword.
Photo from Hermann Historica