sorry guys, I was in a rush. Here's the continuation:
Also, another telltale sign would be the ukkil decorations on the handle.
Going back to this kriss's age: my assertion of it being from the 1700's were based on the size of the sword, which is 'diminutive' compared to the later ones; and more importantly, the rare transitional pommel style which is a cross between the 'ancient' type cockatoo and the more 'modern' type which tends to have a longer beak and flared out plume, albeit narrower in total width.
to be continued...