This bozzetto was the subject of a restoration campaign, thanks to the David Constant Fund (King Baudouin Foundation).
While cleaning one of the bozzetti, the restorer, Farzad Ziari, discovered that Saint Domitian's head was detachable; the earth used for the head was different from that of the body. He also found an anatomical anomaly; the head was placed directly on the bust. The traces of glue attest to this.
