Watch List notes:

BITHYNIA. Kalchedon. late 4th-3rd century BC. Hemidrachm (Silver, 10 mm, 1.87 g, 3 h), ΚΑΛ Forepart of a bull standing left; to left monogram. Rev. Three grain ears. RG 16. SNG BM Black Sea 110. SNG Copenhagen 354. Nicely toned, dark lustrous patina; attractive reverse. Very fine.