[mrwizard]

Thanks for all the kind suggestions. My first guess was also bugis because of the blade form. But then, as has been noted, the hilt does not look like bugis at all.

The carving style seems at first glance be similar to the tau-tau ancestor statues of the Toraja. So my (wild) guess
is that the hilt originates from Sulawesi where these cultures live closely together.
However, i didn't find anything from these cultures depicting the gesture and hair-stye of the figure from the hilt :-/

Of course it might be a composite keris from completely unrelated parts, but then what was the motivation of combining these items? If it was for sale to tourists,
i guess it would have been easy to come up with a hilt that is more appealing to this target group. It also didn't seem to be very appealing to collectors either, because i got it rather cheaply.
Maybe the ensemble was combined by a european collector from "spare parts".