Adni had a 'related' keris and hulu come in a while back.
Related in the sense that the hulu shares the same 'receded' nose and protruding 'forehead', but not as exaggerated as the keris above. The blade on this example is also very interesting in that it is so slim and lanky. I would only say probably not Minang, not Palembang.
Ah, this is a very grey area for me.