They did quite a good job in preserving the skeleton, glad to see this one wasn't wasted
And it stands on its own! Invisible supports are handy.
Though this skeleton, as many other elephant skeletons in museums, has a flaw - it lacks the lower portions of ribs along with sternum. They usually get damaged or lost after autopsy.
But the zoo should recreate these bones at least! Even mammoth fossils get such a restoration, because sternum is rarely can be found.