TCRIB-21, SEVERUS ALEXANDER, AE 21.03 gm 30 mm SESTERTIUS, 222-235 AD. Obv: IMP CAES MAVR SEV ALEXANDER AVG, laureate and draped bust right. Rev: PMTRPVI COS II PP with SC in the field. Mars advances right, holding spear and trophy over his shoulder. C-313, RIC-456