Bithynia, Kalchedon AR Drachm. Circa 367-340 BC. Rhodian standard. KAΛX Bull standing left on grain ear; to left, kerykeion and ΔA monogram / Quadripartite incuse square. HGC 7, 511; SNG Black Sea 104; SNG von Aulock 487-488. 3.71g, 15mm.
Good Very Fine.
From a private UK collection.