All very nice dha. I think the first is definitely Cambodian. The other two I would say are from Laos or Northern Thailand. They have simple handles, the blades lack a "waist"a and the distinct break in the curve at the forte, they have no guard, and the scabbard toe is not upswept.
The silver work on the second one resembles very much the work on the badik under discussion
here, a very timely addition to that thread.
