Kingdom of Macedon, Antigonos I Monophthalmos. As Strategos of Asia, 320-306/5 BC, or king, 306/5-301 BC. AR Tetradrachm (16.67g, 30.1mm) In the name and types of Alexander III. Lampsakos mint. Struck circa 310-301 BC. Head of Herakles right, wearing lion skin / Zeus Aëtophoros seated left; in left field, forepart of Pegasos left; AI below throne. Price 1385; ADM II Series XVIII.