Watch List notes:

THRACE, Mesambria. Circa 175-150 BC. AR Tetradrachm (33.5mm, 16.64 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, crested Corinthian helmet right above XO; HP[A] below throne. Karayotov I 132 var. (O47/R– [unlisted rev. die]); Price 1101; HGC 3, 1569. Lightly toned, double struck. VF.

Ex Colin E. Pitchfork Collection (Classical Numismatic Group Electronic Auction 421, 30 May 2018), lot 10, purchased from Classical Numismatic Group, 10 November 2001.