Always nice looking at these "archaic" style kris and certainly one of these is on my wish list. I do wonder when this junggayan pommel met this hilt as it does not seem original to me, nor does the top band. But i still wouldn't kick this baby down the block for not being 100% original.
It shouldn't be too hard to test your suassa theory by having it tested. Doesn't look that way in the pics, but photos are deceptive.