KINGS of MACEDON. Antigonos I Monophthalmos. As Strategos of Asia, 320-306/5 BC, or king, 306/5-301 BC. AR Drachm (18mm, 3.8 g). In the name and types of Alexander III. Magnesia mint. Struck circa 318-301 BC. Head of Herakles right, wearing lion skin / Zeus Aëtophoros seated left; monograms in left field and below throne.