Silver denarius, 19mm, 2.97gm, issued AD 222. Antioch mint.
Obv: IMP C M AVR SEV ALEXAN AVG, Laureate head facing right.
Rev: LIBERTAS AVG, Libertas standing left holding pileus and sceptre, star in left field.
No reference work appears to have this exact obverse legend, which was probably a mistake at the mint.