Nummus - Constantius Gallus as Caesar FEL TEMP REPARATIO, Sirmium

Constantius Gallus was appointed Caesar by his cousin Constantius II in 351, partly out of dynastic necessity — most of the male Constantinian line had been massacred in the succession crisis of 337, leaving few reliable relatives to govern the East. Sirmium, as a major Danubian imperial residence and mint city, was politically central to that arrangement. Gallus proved a brutal and erratic administrator in Antioch, and Constantius had him arrested and executed in 354, cutting short both his rule and, effectively, this issue's production window.