Severus Alexander (222-235).     AE Sestertius. Roma mint.   Obv.    IMP SEV ALEXANDER AVG. Laureate bust right, with slight drapery on left shoulder.        Rev.   ANNONA AVGVSTI S C. Annona, draped, standing left, holding corn-ears in right hand over modius and anchor in left hand.     RIC IV  549b.     22.05 g.   31.00 mm.        Enchanting green patina with reddish hues.    Good VF.