Continental Greece. Islands off Attica, Aegina. AR Stater, 510-490 BC. D/ Sea turtle; c/m: head of fish right. R/ Incuse pattern with four triangles. SNG Cop. 502. AR. g. 11.95 mm. 21.00 About VF/VF. The design of the countermark on the obverse is very similar to those of the archaic coinage of Kyzikos.