CNG 93, Lot: 345. Estimate $500. Sold for $320. This amount does not include the buyer’s fee.

BITHYNIA, Kalchedon. Circa 260-220 BC. AR Tetradrachm (28mm, 17.11 g, 12h). In the name and types of Alexander III of Macedon. Head of Herakles right, wearing lion skin / Zeus Aëtophoros seated left; HP monogram in left field, Θ below throne, grain ear in exergue. Price 936 (Kallatis); HGC 7, 521. Good VF, toned, underlying luster.

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.