Julia Mamaea, mother of Severus Alexander (died 225 AD).     AE Sestertius, Rome mint, 230 AD.   Obv.    IVLIA MAMAEA AVGVSTA. Diademed and draped bust right.        Rev.   FELICITAS PVBLICA S C. Felicitas, draped and seated left, holding caduceus in right hand and cornucopiae in left hand.     RIC IV  (Sev. Alex.) 679.     20.73 g.   29.70 mm.        Light green patina.    VF.