Kalchedon, Bithynia, AE17. 323-281 BC. 5.26 g. Helmeted head of Athena left. KALX above bull standing left on grain ear. SNG von Aulock 490; RecGen 24; Hunter 2; Türkoglu B03; Hoover HGC 545; SNG Black Sea 130. With permission of Roma Numismatics E-Sale 18, Lot 459, June 2015 (Türkoglu: "The Civic Coinage of Calchedon" in "Proceedings of First International Congress Of The Anatolian Monetary History And Numismatics, 25-28 February 2013" pp. 589-606)