Macedonian Kingdom. Antigonos I Monophthalmos. As king, 306/5-301 B.C. AE unit (17.4 mm, 3.54 g, 12 h). Salamis mint, Struck under Demetrios I Poliorketes. Macedonian shield, boss decorated with facing gorgoneion / B-A, Macedonian helmet; caduceus to left, IΣ monogram to right. Price 3159; Zapiti & Michaelidou 7-8. VF, areas of green encrustations.