i'm still not following what you're referring to, Kai. so are you saying that the handle and scabbard are not original with the blade?
Yup, that's my hunch: This blade may very well be 19th c. (can't judge wear, profile, etc. from pics to support this); the long ferrule (possibly the additional silver bands) and the wooden base of the grip area probably, too.
The pommel still gives me weird vibes, especially from the craftsmanship (as perceived from the pics) like the carved ukkil and fit of the inlay.
With a status barung I'd expect good quality narra wood for the scabbard; even if the wood choice got influenced by a limited budget, the carving does seem more like 20th c. to me.