Hello Leif,
since nobody comment until now I will give it a try.

I think that it is a Samal barong, 1900-1930 as age guess. The brass bands at the scabbard are not original and maybe much later. Would like to see better pictures when you have received it but I think that it is coated with some sort of varnish, maybe shellac. I have a barong which is also coated with shellac, see here:
http://www.vikingsword.com/vb/showth...ghlight=barong
I don't think that the ferrule is from siver, could be white brass.
Regards,
Detlef