Antoninus Pius. Drachm; Antoninus Pius; 138-161 AD, Alexandria, Egypt, Year 18 = 154/155 AD, Drachm, 16.66g. Emmett-1589.18, Cologne-1749. Obv: Bust of Pius r. Rx: Harbor of Alexandria; Isis standing l., holding grain ears and rudder; to l., prow above Euthenia seated r.; to r., stern above Nilus reclining l., holding rudder.This coin has very smooth surfaces from heavy use, but virtually no loss of any important details. F