Thrace, Byzantion AR Drachm (Silver, 2.21g, 13mm) ca 387/6-340 BC.
Obv: Bull standing to left on dolphin
Rev: Stippled quadripartite incuse square in mill-sail pattern.
Ref: SNG Stancomb 1; Corpus Nummorum 5975; Schönert-Geiss 731; SNG BM Black Sea 8-11 var. (control under raised foreleg); HGC 3.2, 1387.