Hello David,
wow, a real beauty.
And like usual from you very good pictures.
My guess would be Peninsula, the hilt and the scabbard toe let me think like this. I have a very similar keris respective the blade shape in my collection, see here:
http://www.vikingsword.com/vb/showth...hlight=panjang, post #40
The blade is as well like a needle.
Regards,
Detlef