Obverse: Bare-headed, draped, and cuirassed bust of Caesar Constantius Gallus facing right. Legend: DN CONSTANTIVS IVN NOB C.
Reverse: Soldier spearing a fallen horseman. Legend: (FEL) TEMP REPARATIO.
When Constantius II marched west in 351 to fight the usurper Magnentius, the need arose to appoint a Caesar to represent the dynasty in the East during his absence. The choice fell on Constantius Gallus, son of Julius Constantius (half-brother of Constantine) and thus cousin of the emperor. Gallus was made Caesar and married to Constantina, Constantius's elder sister, before being sent to Antioch to establish the imperial presence in the eastern portion of the empire. However, the Caesar and his wife were unwilling to accept their subordinate role and acted increasingly independently in the following years, clashing with both local magistrates and Thalassius. In 354, Gallus was invited to a meeting with Constantius II in Mediolanum, but was arrested on the emperor's orders and taken to Pola (Flamona), where he was executed.
- Composition: Bronze
- Denomination: Centenionalis
- Date: 351–354 A.D.