I nice Christmas present, and i would agree with Kai that it certainly isn't a Sumatran sundang, it is indeed a Moro kris.
Obviously i'm not sure who label this kris as "Sumatra" either, but i will say that there is never any guarantee that museum curators get such identification correct. I have been in a number of major museums and seen mislabelled keris and other items. Edged weapons are not every museum curator's strong points. Of course they often will politely blow us collectors off when we try to set them straight, because how dare we know better than them when we don't have their degree. LOL!
