Watch List notes:

THRACE, Mesambria. Circa 150-125 BC. AR Tetradrachm. Head of Herakles right, wearing lion skin / Zeus Aëtophoros seated left; in inner left field, helmet above ΔA; ΠPO monogram below throne. Karayotov I 214 (O64/R208); Callataÿ Group 2, dies D16/R7; Price 1062; HGC 3, 1568. In NGC encapsulation 4680413-030, graded XF.

Ex Classical Numismatic Group Electronic Auction 420 (9 May 2018), lot 22.