I have to join with the others in saying what a great find that is. I have seen similar hilts but never have seen that tip style or makers mark either. Its a shame Dan is not still in Thailand to find out about the mark. I have seen several dha now with the longer handles with a more dramatic curve. Andrew is the evidence now that this is mostly Laotian ?
The only one I own that is similar is this one
Again congratulations on the find and beware dha are addictive. I am sure the surgeon general will soon require warning labels on them.