BITHYNIA. Kalchedon. AV Stater (8.50 gms), ca. 260-220 B.C. NGC EF, Strike: 4/5 Surface: 4/5. Pr-915 (Kallatis). In the name and types of Alexander III of Macedon. Obverse: Helmeted head of Athena right; Reverse: Nike standing left, holding wreath and stylis; monogram in left field and below left wing. Pleasingly centered and struck, with hints of brilliance remaining in the protected areas.