Julia Mamaea. Tetradrachm; Julia Mamaea; Alexandria, Egypt, RY 12 (232/233 AD), Tetradrachm, 10.75g. Dattari-4473, Geissen-2532. Obv: Draped bust right, wearing stephane. Rx: Helmeted and draped bust of Athena Parthenos right; L IB (date) to left, palm frond to right. Extremely rare with full silvering.Exceptional quality of silver for this issue. gVF