Coin depicted roughly twice actual size*

AE3 of Constantine I

Bronze AE3, 19mm, 3.10gm, issued AD 321-324 Siscia mint.

Obv: CONSTANTINVS AVG, Laureate head right.

Rev: DN CONSTANTINI MAX AVG (•ASIS in ex.), VOT/XX within a laurel wreath.

References: Sear 16220, RIC 180.