Severus Alexander AD 222-235. Denarius (AE; 18-20mm; 2.55g; 6h) plated. IMP C M AVR SEV ALEXAND A[VG] Laureate and draped bust of Severus Alexander. Rev. MART-I P-A-CIFERO Mars helmeted, in military dress, standing front, head left, holding branch in right hand and vertical spear reversed in left.
BMC p. 121, 72 footnote: '...plated denarius of this type...'; C. 175; cf. RIC p. 83, 160.