That pommel is really not a typical feature for mainland SE Asian weapons. While there are occasional blades that resemble a ram dao
(which your example also resembles IMO), the hilts on mainland SE Asian examples are quite different from yours and more closely resemble either those seen on ram dao
from India/Nepal or hilts seen on dha/daab of that region. From memory, all that I've seen had a metal bolster or ferrule adjacent to the blade.
There is an old thread started by Oriental-Arms concerning two "bird swords" that were possibly dha and showed elongated and pointed hilts (See: http://www.vikingsword.com/vb/showthread.php?t=2324
). Those are the only two wooden hilts on dha-like swords that I can recall coming anywhere close to the elongated form on your sword.
It's hard to know what that elongated "cone" pommel on your hilt might represent, but it is quite different from the "lotus bud" depicted commonly on the pommels of dha/daab and which is an important Buddhist emblem.