Thanks Shahrial for the references.
Obviously I have to study Brunei better instead of focusing on the other Borneo regions.
Do I understand you correct that your listed sources states that it was only Keris that were produced in Brunei and that the Kris were imported from the Sulu archipelago?
Or do they state that Kris also were produced in Brunei?
If so, is there a special Brunei style of Kris with characteristic features?
Michael