Silver denarius, 18mm, 2.93gm, issued AD 224 Rome mint.
Obv: IMP C M AVR SEV ALEXAND AVG, Laureate, draped bust right.
Rev: PM TRP III COS PP, Mars, helmeted, in military attire standing left, holding olive-branch and spear.
References: see Sear 7895, RIC 37, RSC 251.
