Severus Alexander (222-235). AR Denarius (18mm, 2.33g, 6h). Rome, AD 223. IMP C M AVR SEV ALEXAND AVG, laureate, draped and cuirassed bust to r. R / P M TR P COS P P, Mars standing facing, head to l., holding inverted spear and branch. RIC IV 7; C. 207; BMCRE 28.