Greek BITHYNIA. Kios. (Circa 345-315 BC). Proxenos, magistrate. AR Hemidrachm (11mm 2.36g) Obv: Laureate head of Apollo right Rev: Prow of galley left, ornamented with star; ΠPOΞ-ENOΣ above and below. RG 4; HGC 7, 554.