Byzantion, Thrace, AR tetradrachm, 23 mm, 15.15 g. 387-339 BC. PY above bull standing left on dolphin, foreleg raised, AT monogram in lower left field, B beneath the bull. Quadripartite incuse with dotted surfaces. Schönert-Geiss 710-711; Babelon, Traité 1533; Berlin 18234640.