Not sure how such an item could be valued .. after all it's only of use to palaeoanthropologists. It's been in place for 5.7 my, and another 15 since being found, but suddenly when declared as possibly left by an early hominid ancestor it leaps in value enough to be stolen? My expectation is that they will just be binned after a few attempts to sell on.
Geographically, in the lifetimes of the creatures, there was no Mediterranean, so current demarcations and boundaries make no sense. Maybe it is an expression of the European urge to appropriate anything within reach? Just as well they never invented anything important otherwise civilisation would have been strangled at birth by demands for royalties for patents and copyrights