Watch List notes:

THRACE, Mesambria. Circa 100-72/1 BC. AR Tetradrachm (33mm, 15.98 g, 12h). In the name and types of Alexander III of Macedon. Ompha–, magistrate. Head of Herakles right, wearing lion skin / Zeus Aëtophoros seated left; in left field, OMΦA above crested Corinthian helmet right; MEΣAMBPI in exergue. Karayotov I 324 (O99/R320); Callataÿ Group 4, dies D2/R2; Price 1124; HGC 3, 1570. EF, toned, small flan flaw on reverse. Very rare, three noted by Karayotov and Callataÿ (including the one in Pella), three in CoinArchives (including the present piece).

From the Colin E. Pitchfork Collection. Ex Classical Numismatic Group 58 (19 September 2001), lot 246.