BITHYNIA, Kalchedon. Circa 367/6-340 BC. Tetradrachm (Silver, 20mm, 15.08 g), Rhodian standard. KA[ΛX] Bull standing left above grain ear (here off flan); monogram to left. Rev. Quadripartite, granulated incuse square. SNG Black Sea 93 var. SNG Copenhagen 351 var. (both with differing monogram). Waddington, Rec. gen. 14. Head of bull struck flat and reverse off-centered, otherwise. very fine.