3.49g
Sirmium mint
Obv: Bust of Constantius II right "DN CONSTAN-TIVS PF AVG" "A" behind his head
Rev: Constantius II standing left with standard being crowned by victory "HOC SIGNO VICTOR ERIS" "ASIRM" in exergue
The reverse inscription refers to Constantine's vision prior to the battle of Milvian bridge that instructed him to paint the Chi-Rho symble on his army's shields. He was victorius in the battle.
RIC 21