Jawa Keris for ID

[David]

Not sure your really need any more info here, so i am just chiming in to say that like Alan i like this keris.
I also agree with Alan that i would not change this hilt and also agree that it is marine ivory of some sort. One way of telling it is not elephant ivory is that elephant will usually display Schreger lines and i do not see any here. I have posted an image that shows what these Schreger lines look like.
One thing for sure, the hilt certainly is not wood.
While it is not really possible to tell for sure just from a photograph, it does appear that the "selut" is indeed silver. The motifs are unfamiliar to me though.