This marble bust of Roman empress Giulia Domna coming from Villa Adriana (Tivoli) is one of the artworks that were exhibited at UNESCO in the framework of the “Recovered Treasures” exhibition organized by the Italian permanent Delegation.
See the full article about its story and the work of the Carabinieri Department for the Protection of Cultural Heritage (TPC):
http://en.unesco.org/news/giulia-domna-s-story-illicit-trafficking-0