Watch List notes:

THRACE, Byzantion. Circa 340-320 BC. AR Siglos (17mm, 5.35 g). Persic standard. Heifer standing left on dolphin left / Incuse punch of mill-sail pattern. HGC 3, 1389; SNG BM Black Sea 21–8. Toned. VF.

From the Collection of a Well Known Author. Ex Agora Auctions 65 (14 March 2017), lot 11.