Watch List notes:

BITHYNIA. Kalchedon. Circa 340-320 BC. 1/4 Siglos (Silver, 10 mm, 1.25 g), Persic standard. KA Bull standing left on grain ear. Rev. Quadripartite incuse square of mill sail pattern. HGC 7, 519. SNG BMC Black Sea 124. Flan crack, otherwise, very fine.