Another thing to take in consideration is the tang - stubby and somewhat downcurved, typical SE.
That last flachion has an awsome blade, I think the hilt is a later (yet old) refitting, maybe colonial dutch.

yes thanks for the suggestion, though this is a very common feature for many, around the world.
further I have also seen a lot of SA origin with a twist (cork turner) in the tang.

exactly a hit! Yes, I also think Dutch colonial probably Ceylon and later as the blade, if you look at the carved faces, they have an asian/oriental look.

best,