Nagaland or Assam ?

[colin henshaw]

Thanks to Ian & BANDOOK for their comments.

Another unusual feature of my sword/dao is that wrapped area at the forte, presumably for two-handed use ? A fairly similar feature is to be found on other long swords described as from Assam, see nos. 4 & 5 in the attached image. The concept sort of reminds me of those two-handed medieval swords or "zweihander" ...