Folks, we have been through this already several times: From the pics supplied so far, there is no chance whatsoever to verify wether this hilt is made from rhino or waterbuffalo horn! We really need a close-up of a cross-section of the fibers, i. e. the top of the head or possibly the base of the hilt also.
We can argue about likelihoods but this never positively prooves anything for any given piece. Actually, the current pics make me feel albino water buffalo - I agree that the alternative is also plausible though...
Thanks a lot for those pics, Gustav! Could you please try to get additional ones? I also wouldn't mind better quality pics of the other parts of this keris...
Regards,
Kai