CNG 91, Lot: 218. Estimate $750. Sold for $850. This amount does not include the buyer’s fee.

BITHYNIA, Kalchedon. Circa 260-220 BC. AR Tetradrachm (28mm, 16.83 g, 12h). In the name and types of Alexander III of Macedon. Head of Herakles right, wearing lion skin / Zeus Aëtophoros seated left; ΠA monogram in left field, grain ear in exergue. Price 926 (Kallatis). EF, toned, minor die shift on obverse.

See U. Wartenberg & J.H. Kagan, “Some Comments on a New Hoard from the Balkan Sea” in Travaux Le Rider, pp. 402–5, for the reattribution of this, and many of the other issues Price assigned to Kallatis, to Kalchedon.