This bone does not exist anywhere but virtual space. It can be printed for inclusion in a mount, and then it would exist in physical space. Since it is about three feet long, it would have to be printed in pieces with the printers available to the Tate Museum. (It is probably not going to happen.)
Having an assembly in virtual space can help with identification (see below left illustration by Russell Hawley).
3D of the ilium made it possible to "mirror" it in virtual space for inclusion in a virtual assembly. The 3D files for this mirror can be accessed from Zenodo: https://zenodo.org/uploads/13287192
