Severus Alexander. 222-235 AD. AE Sestertius (28mm, 19.69g). Rome. AD 222-231 AD. IMP SEV ALE - XANDER AVG, laureate bust right. drapery on left shoulder, / ROMAE AE - TERNAE, Roma seated left, on shield, holding Victory and sceptre; in exergue, S C. RIC 602; C 520.