Egypt. Alexandria. Antoninus Pius, 138-161. Tetradrachm (Billon, 23.20 mm, 13.59 g). Dated RY 5 (= 141/2). ΑΝΤωΝΙΝΟϹ ϹΕΒ ΕΥϹΕΒ Laureate, draped and cuirassed bust right. Rev. Nude Poseidon standing with foot on prow, holding trident and dolphin; L/E in left field. Dattari-Savio 8224 (this coin). RPC IV. 4, 366.11 (this coin). Milne 1703. Emmett 1421. Cf. Savio A., Tetradrammi alessandrini, pp. 82-86. Very Fine. Ex Giovanni Dattari Collection, Il Cairo, 8224. Ex Naville Numismatics Ltd. 40, 27.05.2018, lot 394. The powerful and statuary image of naked Poseidon dominates, from the bow of a ship, the horizon of the sea, by him protected, that is, the classic Mediterranean.