Severus Alexander. Denarius; Severus Alexander; 222-235 AD, Rome, 228 AD, Denarius, 3.19g. BM-503, C-337, RIC-83. Obv: IMP SEV ALE - XAND AVG Head laureate r. Rx: P M TR P VII - COS II P P Mars standing r. holding spear and shield. From the Philip Ashton Collection, purchased from Alex Malloy, May 2002.. MS