This Roman bust was made with 123D Catch, the description says it's Caesar but in the comments it was suggested it is Emperor Hadrian which seems likely. This is a 3D scan made by Adam Wentworth 221: http://www.123dapp.com/catch/caesar-sculpture/5905973
I edited the file for 3D printing. I made it solid, deleted noise, smoothed and edited the mesh (resculpted part of the base) and scaled and oriented it. Everything was done with MeshMixer.
The author marked this model as their own original creation. Imported from Thingiverse.