Watch List notes:

BITHYNIA, Kalchedon. Circa 260-230s BC. AV Stater (18mm, 8.33 g, 12h). In the name and types of Lysimachos. Diademed head of the deified Alexander right, with horn of Ammon / Athena Nikephoros seated left, left arm resting on shield, transverse spear in background; two monograms to inner left. Marinescu –; Türkoğlu –; Müller –; cf. HGC 7, 505. Underlying luster, scattered marks. Good VF. Extremely rare, the fourth known; three in CoinArchives, one additional in a public collection (Bucharest).