Kings of Bithynia, Prusias II Cynegos Æ (20mm, 6.6 g). Nikomedia mint, circa 182-149 BC. Ivy-wreathed head of Dionysos to right / The centaur Chiron walking to right, cloak over shoulder, playing lyre; BAΣΙΛΕΩΣ to right, ΠΡΟΥΣΙΟΥ to left, monogram between forelegs