Islands off Thrace, Thasos. Circa 500-480 BC. AR Obol (8 mm. 0,32 g). Two dolphins swimming in opposite directions, pellets around. Rev. Quadripartite incuse square. Le Rider, Thasiennes 9; HGC 6, 337; BMC 18-22. Very fine, small and insignificant part of the field below is missing (presumably broken in antiquity) but the image is clear and intact, nicely defined.