Greek Coins IONIA. Phokaia. Obol (Circa 521-478 BC). 0.9gr 8.4mm Obv: Archaic head of Athena left. Rev: Quadripartite incuse square. SNG Kayhan -; Klein -; SNG v. Aulock -; Isegrim -; cf. CNG 177, 109. Condition: Good very fine.