Watch List notes:

BITHYNIA. Kios. Circa 350-300 BC. Hemidrachm (Silver, 14 mm, 2.45 g, 1 h), Poseidonios, magistrate. Laureate head of Apollo to right. Rev. Π-OΣEI/ΔΩNIOΣ Prow of galley to left. BMC 8. HGC 7, 553. Slightly rough, otherwise, very fine.