forgive my ignorance, but is is this not a Javanese Pedang Lurus ?
We see a fair amount of such blades in there Netherlands.
If this is what I think it is the blade is not a repurposed kris blade but a specially made blade, slightly curved and the only similarity is the pamor (which is not unique to krises)
http://atkinson-swords.com/collectio.../pedang-lurus/