By Anne Leader
9 September 337 CE Constantine II, Constantius II, and Constans I succeeded their father Constantine I as co-emperors, dividing the Roman Empire between three Augusti.
Emperor Constantine I, Campidoglio, Rome
Emperor Constantius II, from Syria, Philadelphia: University of Pennsylvania Museum of Archaeology
Bust of Roman Emperor Constans, marble, second third of the 4th century. Paris: Louvre
Map: Division of Roman Empire among Constantine II (orange); Constans I (green); Dalmatius (yellow); and Constantius II (pale blue). Dalmatius was killed in XXX CE and his territory was divided between Constans and Constantius.
Constantine II, as Caesar. AV Solidus. Heraclea mint. Struck 326-330 CE: CONSTANTINVS IVN NOB CAES, laureate, draped, and cuirassed bust; obverse: VICTORIA CAESAR NN, Victoria advancing left, holding wreath and palm; SMH.
Constantius II. AV Solidus. Struck 337-347 CE. Antioch mint. FL IVL CONSTANTIVS PERP AVG, Pearl-diademed, draped and cuirassed bust; obverse: VICTORIA AVGUSTORVM, Victoria seated right on cuirass, inscribing VOT/XV/MVLT/XX in four lines on shield resting on knee and supported by a small genius; SMANΔ.