Watch List notes:

BITHYNIA. Kalchedon. mid-late 4th century BC. Dichalkon (Bronze, 15 mm, 3.07 g, 6 h). KAΛX Bull standing left on grain-ear right. Rev. Bundle of three grain-ears. Naumann 35 (2015), 146 corr. (not unpublished). RG p. 293, 18. Very rare. Somewhat rough, otherwise, about very fine.