Egypt. Alexandria. Julia Mamea, mother of Severus Alexander, 222-235. Tetradrachm (Billon, 23.1 mm, 12.33 g). Dated RY 7 of Severus Alexander (= 227/8). ΙΟΥ ΜΑΜΑΙΑ ϹΕΒ ΜΗΤ ϹΕΒ Κ ϹΤΡΑ Draped bust right, wearing stephane. Rev. ΠЄPI OΔOC ΔЄKA TH in four lines within wreath. Dattari-Savio 4534. Emmett 3233. RPC VI online, 10435. Geissen 2512. BMC 1762. Minor deposits. Very Fine. Ex Roma Numismtics Ltd. IV, 30 September 2012, lot 729. Tetradrachm minted in the name of Julia Mamea, inseparable mother of the sovereign Alexander Severus, glorifying the Emperor's next "decennalia" as confirmed by the reverse legend surrounded by a laurel-wreath. The soft portrait of the "Augusta" is charming on the obverse.