A Beautiful HUGE Dha Knife/Dagger...but what's it used for??

[Mark]

Gorgeous blade! Its what is called a "priest knife." I am looking for my materials on them, and will write more later. Dan Wilke got me a big poster in Thailand with pictures of various types. The size reminds me of the sort of thing you see with piha kaeta. There was a lot of contact between Sri Lanka and Burma over the centuries.