THRACE. Byzantion. Circa 340-320 BC. Siglos (Silver, 17 mm, 5.35 g), Persic standard. ΠY Bull standing left on dolphin left, right foreleg raised. Rev. Quadripartite incuse square of mill sail pattern with stippled quarters. HGC 3.2, 1389. SNG BM Black Sea 21. SNG Copenhagen 475-7. Beautifully toned and exceptionally well preserved for this issue. A few very light scratches, otherwise, extremely fine.