Identify.

Augustus as Pontifex Maximus, ca 12 BCE, marble, from Via Labicana, Rome, now in Palazzo Massimo alle Terme, Rome, capite velato (head covered), toga/drapery deep folds (plays with light and shadows), intentionally made with 2 types of marble, the more expensive marble (smoother, less color variation) is used for the skin, contrapposto, thought to be a direct copy of Doryphoros of Polykleitos (proportions match exactly), probably making a sacrifice, less veristic and more idealized, intentionally referencing classical Greek sculpture