Watch List notes:

BITHYNIA. Kalchedon. Circa 340-320 B.C. AR siglos. 5.33 gm. 17 mm. Persic standard. A bull standing left, a grain ear below; ΚΑΛΧ above / A quadripartite square of mill-sail pattern. SNG Cop 348. Near Extremely Fine; good style; attractive lightly iridescent old collection toning on good metal; well centered and notably better than most examples typically seen of this issue.