Egypt. Alexandria. Antoninus Pius, 138-161. Tetradrachm. (Billon, 24.20 mm, 12.26 g). Dated RY 7 = AD 143/4. ANTωNINOC CЄBЄYCЄB Laureate head right. Rev. The Emperor with toga, laureate, standing right and holding long sceptre in his left hand while clasping hands with Marcus Aurelius in front, bare-headed, wearing toga and holding short sceptre, standing left; L Ζ (date) across field. RPC IV, 4.640.6 (this specimen illustrated). Dattari-Savio Plate 107, 2124 (this coin). Emmett 1387. Good Very fine/Extremely Fine. From the Dattari Collection. Ex Naville Numismatics Ltd., Auction 43, 23.05.2018, lot 290. Superb tetradrachm by Antoninus Pius from the renowned collection Dattari where is artistically and historically relevant the reverse, where appear draped and solemnly faced the emperor (left) and the adopted and preferred Caesar, Marcus Aurelius (right) with their respective sceptres who exchange a loyal handshake in homage to the Concord (Homonoia) that united them. The image is so realistic that you can clearly see the faces of the two characters, engraved with a very refined relief. But also important is the clear dynastic indication of Antoninus Pius’s will to consecrate as his priority successor the young Marcus Aurelius who was adopted by him in 138 AD together with Lucius Verus (son of Elio Verus), also Caesar but "secundus inter pares". Finally, the issuing occasion of this coin must have been the second appointment as a Roman consul by Marcus Aurelius.