A Roman sculpted white marble vasque wall basin, late 16th / early 17th century, of loosely demi-lune section, the front carved in relief with a gorgon's mask, her open mouth as a water spout, her hair as serpents issuing to each side beneath wings, the sides with relief carved figural scenes from classical mythology, above a dentilled underside; the rough hewn interior with a central drainage hole, 50cm high, 105cm wide, 92cm deep;