Watch List notes:

ISLANDS off IONIA, Chios. Circa 510-493 BC. AR Drachm (15.5mm, 7.72 g). Sphinx seated left; amphora to left; all within wreath / Quadripartite incuse square. Mavrogordato 18; Baldwin, Chios 11; HGC 6, 1120; SNG Copenhagen 1540; McClean 8354–6; Ward 678 = Mavrogordato pl. II, 1 (same die and punch, incorrectly listed under Mavrogordato 14). Toned, some porosity, typical compact flan. VF. Rare.

From the William H. Birkinshaw Collection. Ex Triton III (30 November 1999), lot 530.