THRACE. Byzantion. Circa 340-320 BC. Siglos (Silver, 17 mm, 5.30 g). ΠΥ Bull standing left on dolphin left. Rev. Quadripartite incuse square of mill sail pattern. SNG BM Black Sea 21. SNG Copenhagen 475-7. Nicely toned. Area of weakness on the obverse, otherwise, good very fine.

From an old Swiss collection, formed in the 1970s.