Head Of Roman Emperor Augustus 3D Scan by 3DWP is licensed under the Creative Commons - Attribution - Non-Commercial - Share Alike license.
This is a 3D scan of the head of Augustus in the Vatican. I edited it for 3D printing by making it solid, orienting and scaling it and cutting flat planes with MeshMixer (http://www.meshmixer.com).
I found the scan here: http://www.123dapp.com/catch/Head-of-Augustus/2276034
--> Edit 2015-05-02: I added a reduced version (slighter lower poly) that is also reoriented. Should print supportless, the face is now pointing up. <--