THE Art Institute of Chicago acquired in 1889 a marble portrait head (Fig. 1), which is believed to have come from Rome. It is rather more than two-thirds life-size.1 While it has suffered a fair amount of damage, the brow, nose, and chin being somewhat injured, the surface has fortunately not been over-cleaned, nor has any restoration been attempted. The head, which is broken off at the neck, presumably belonged to a terminal bust.