Antigonos I Monophthalmos. As Strategos of Asia, 320-306/5 BC AR tetradrachm 27 mm. 16.7 gm. Sidon, Dated RY 23 of Abdalonymos (311/0 BC). Obv: Head of Heracles right, wearing lion skin headdress, paws tied before neck. Rev: ΑΛΕΞΑΝΔΡΟΥ, Zeus Aëtophoros seated left; Ψ (date) in left field, ΣI below throne. Price 3514; Newell, Dated 59 (dies XXXI/β); DCA 874. Very rare, only three in Pella, four in CoinArchives, all from the same obverse die.