Hello Séverin,
I agree with Kai that's not very important to give your sword a regional name and would also go with the from Kai given origin, Karel Sirags classification in Alberts book.
Many Timor swords have blades with European origin, I think that your very nice sword has also a recycled European blade. And I think that we need many close ups from your sword. Hair on both sides of the hilt is a common feature, see here for example:
http://www.vikingsword.com/vb/showth...ighlight=timor
But like Kai I think that the hair get renovated and isn't old like the sword, please post close ups from the base from hair tufts. This could get renovated in Indonesia by the current owner, I know that this is a common practice on the Easter Timor Islands when old/antique swords get used by ceremonies.
So please post many pics with close ups. When you ever get tired to look at your sword I would be glad to give it a new home!
Regards,
Detlef