Watch List notes:

THRACE, Mesambria. Circa 175-150 BC. AR Tetradrachm (34mm, 16.48 g, 12h). In the name and types of Alexander III of Macedon. Head of Herakles right, wearing lion skin / Zeus Aëtophoros seated left; in inner left field, helmet above ΔA; ΠY monogram below throne. Karayotov I 136 (O47/R131); Callataÿ p. 103, dies D31/R4; Price 1047; HGC 3, 1568. VF, double struck on obverse.

From the Colin E. Pitchfork Collection. Ex CNG Inventory 727788 (November 2001).