Tom Cederlind, ebay Chios silver coin depicts a sphinx! Sold for $109 on 29th June 2001. IONIA: CHIOS. c. 478-431 BC. Silver Half Stater, 13mm (3.46 gm). O: Sphinx seated, l., in front of amphora. R: Quadripartite incuse square. cf. SNG. Cop. 1545. F-VF.