This one just ended by ebay:
http://www.ebay.com/itm/Very-Nice-19...vip=true&rt=nc
I was outbid but think that the happy winner have get it for a very very good price, hopefully someone from the forum.
I think that it is a Batak sword but frankly said I never have seen something similar before. I would like to know if someone is able to enlighten me.