What happened to this Barung

[Interested Party]

This is a question I've been pondering lately and I think this is a good time to ask it.

How serviceable is a blade after this kind of repair? It would obviously have to be normalized, hardened, and tempered. Would a chopper like this be able to take much impact or would it just be a show piece after the repair? Was this beautiful hilt and sheath original or manufactured for the remade blade?