After Polykleitos, ‘Fragments of a marble statue of the Diadoumenos (youth tying a fillet around his head)’, ca. A.D. 69–96, The Metropolitan Museum of Art

Early Imperial, Flavian
http://www.metmuseum.org/art/collection/search/251838

Image rights: The Metropolitan Museum of Art (Fletcher Fund, 1925), licensed under CC0 1.0 Universal