Portrait of the philosopher Pythagoras (?), Roman copy of an original classic period, Italy (?), Marble. Musee d Art et d Histoire (Musee du Cinquantenaire, Brussels, Belgium). Made with CapturingReality.
This bust is a Roman replica of a Greek original from the end of the classical era attributable perhaps to one of the great masters of the time.
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Could be added as a different object and it would still be good enough. The new blender stuff that's in the works does have some retopo modifier for this kind of stuff.
Modern scanner technology is truly amazing. Too bad there's no such thing as auto retopology or an add missing noses button ;-) ...