Macedonian Kingdom. Antigonos II Gonatas. 277/6-239 BC. AE Unit (3.51 gm, 16mm). Uncertain mint in Macedon. Obv.: helmeted head of Athena right. Rev.: Pan right, erecting trophy to right; B A across field, monogram to outer left, monogram between legs. HGC 3, 1049. Oblong flan, VF.