That's a very unusal ukiran you've got there. It reminds me of the work of futurist sculptors like Boccioni and Brancusi. I wouldn't be surprised to find out that they were inspired by the more abstract hilt forms of the Indonesian keris.
The blade seems well formed, but until you raise the pamor it is difficult to say just how good this keris might be. It looks like late 19thC work to me, probably Javanese. Does it have a sheath?