Watch List notes:

THRACE, Byzantion. Circa 340-320 BC. AR Half Siglos (13mm, 2.46 g). Persic standard. Heifer standing left on dolphin left / Incuse punch of mill-sail pattern. Schönert-Geiss, Byzantion 236–590; HGC 3, 1390. VF, toned, compact flan.

From the Johnson Family Collection. Ex Leo Young CSNA Auction (21 April 1956), lot 1621.