Watch List notes:

ISLANDS off IONIA, Chios. Circa 490-435 BC. AR Didrachm – Stater (15mm, 7.97 g). Sphinx seated left; amphora to left / Quadripartite incuse square. Mavrogordato 16; HGC 6, 1118. Minor die wear. VF. Rare early issue without convex surface on obverse.