I don't think this is Burmese. The faceted, stacked and segmented handle is unlike any Burmese knife I've seen. The blade profile does resemble some Burmese and Thai knives, but the particular combination of elements leads me away from that region.
The bolster at the forte reminds me of a Chinese
tonkou. I'm not really very familiar with the weapons of Tibet and Bhutan, but I would look more towards a Chinese influence than SEA.
I like that knife alot. Thanks for sharing it.