Koinon of Macedon. Struck under Severus Alexander, A.D. 222-235. Æ 26 (26.3 mm, 12.51 g, 12 h). AΛEΞANΔPOY, diademed head of Alexander III 'the Great' right / KOINON MAKEΔONΩN B NEΩK, Alexander riding Bucephalus right, holding spear. SNG Cop 1355. Fine, green patina.