Watch List notes:

Greek Asia. Islands off Caria, Kos. AR Obol, c. 500-480 BC. Crab. / Quadripartite incuse square. Cf. SNG Cop. 615-6 (diobols); HGC 6 1297. AR. 0.61 g. 9.00 mm. R. Rare. Some porosity, toned. VF.