Watch List notes:

THRACE, Odessos. Circa 280-225 BC. AR Tetradrachm (27mm, 16.84 g, 12h). In the name and types of Alexander III of Macedon. Head of Herakles right, wearing lion skin / Zeus Aëtophoros seated left; in left field, OΔ (mint) monogram above AT monogram. Topalov, Odesos, Series 23, unlisted issue; AMNG I –; Price 1141 and 1145–6 var. (lower monogram); HGC 3, 1584. Lightly toned, underlying luster, struck with worn dies, a few light scratches. Good VF. Unpublished variety. Apparently unique.