Severus Alexander. 222 - 235 AD . AE Sestertius US$103.50 May 21, 2006 Severus Alexandrer. 222 - 235 AD . Brass Sestertius (29 mm ; 15.7 gm) Rome 232 AD Obv : IMP ALEXANDER PIVS AVG Rev : MARS VLTOR, S C RIC 635; Sear #7979 . Valued by Sear in VF @ $125