Sargeant Falcon,
I have not found any evidence that this little deer's antlers meant anything more than a good and interesting grip. It makes me think the Newars had a hand in these since they truly are the artists of Nepal. Again a guess. The actual genus of this animal is extinct, but a very close relative of this animal was found in Vietnam about 20 yrs ago. The big difference is that the pedicle isn't as long as found on these early examples. That is what made that deer so unique according to my zoology/anthropology sources.
I think it would be great to rebuild some kardas used with a great copy of the early kukris. Don't forget a metal bolster. Let us know how you do. You craftsmen are a source of wonder to me as I am limited to restoration only.
All early bolster are of steel, silver or gold, They are much plainer and usually not as wide as ones made today. A steel bolster is usually a good sign of authenticity of an old kukri as is the lack of a chape on the scabbard.
Thanks ETP, if I can answer a question about our beloved kukris I will try.