I believe it's an Ang Khola. I've noticed two things, during several years on this subforum: (1) The very large AKs look a little different because the blades are elongated. (2) Sometimes the kamis make an AK with the regular fuller plus an extra fuller that runs the length of the blade. Then they're pretty much the same as a dui chirra model, except that the edge geometry might be a little "thicker" for heavy chopping, but that's hard to see in a photo.
I think that what's happened in the last two years or so is that the kamis have been exercising their creativity a little more and making hybrid models, which is good for collectors, though not good for our bank accounts. Then Yangdu has to exercise her creativity in coming up with new model names. I don't think there even was such a thing as a "dui chirra model" in earlier years. All it means is "two fullers" so it's kind of a catch-all name that could include a more fancy AK or CAK.
If you go to the HI "online store" there's a table of contents listing model names, and "dui chirra" doesn't even appear in the list.
