Thrace, Byzantion. Ca. 240-200 B.C. AR tetradrachm (26 mm, 12.43 g, 12 h). Athanaion, magistrate. Veiled and wreathed head of Demeter right / ΠY, Poseidon seated right on rocks, holding trident and aphlaston; monogram to left, [E]ΠI AΘANAIΩN[OS] in exergue. Schönert-Geiss 1002 (V13/R20); cf. SNG BM Black Sea 59-61. gFine, light smoothing in fields.