Watch List notes:

BITHYNIA, Kalchedon. Circa 367/6-340 BC. AR Drachm (12.5mm, 3.77 g). Rhodian standard. Bull standing left on grain ear; [kerykeion] and monogram to left / Quadripartite incuse square with stippled quarters. Türkoğlu S02a; HGC 7, 511. Compact flan. VF.