EGYPT, Alexandria. Julia Mamaea. Augusta, AD 222-235. Potin Tetradrachm (23mm, 10.29 g, 12h). Dated RY 11 of Severus Alexander (AD 231/2). Draped bust of Julia Mamaea right, wearing stephane / Helmeted head of Athena Parthenos right; L IA (date) behind, palm frond before. Köln 2524; Dattari (Savio) 4470; K&G 64.67; Emmett 3195.11. VF, rough dark brown patina.