Watch List notes:

BITHYNIA, Kalchedon. Circa 260-230s BC. AR Tetradrachm (33mm, 16.86 g, 11h). In the name and types of Lysimachos of Thrace. Diademed head of the deified Alexander right, with horn of Ammon / Athena Nikephoros seated left, arm resting on shield, transverse spear in background; to inner left, herm above grain ear. Marinescu – (but cf. 20, 22, and 23 for similar issues, all struck from an obverse die likely by the same engraver of the die used on the present coin); HGC 7, 524. Traces of find patina. Good VF. Very rare.