CYCLADES, Uncertain, Keos (?). Karthaia (?). Circa 540-520/515 BC. Obol (Silver, 8 mm, 0.92 g). Krater with two handles. Rev. Quadripartite incuse square with one quadrant seemingly diagonally divided . Papageorgiadou-Banis -. Sheedy -. But see: 1) Naville VII, Bement II, 23 June, 1924, 1325 (struck from the same obverse die -and possibly the same reverse); and 2) Nomos 26, Collection sans Pareille, 389, Naville I, Pozzi, 1921, 2015 and G. Hirsch Nachf. 272, 2011, 287 (certainly from the same obverse die). Extremely rare, attractive old cabinet toning. Minor marks and with a die break on the reverse, otherwise, good very fine.