Watch List notes:

ISLANDS OFF IONIA, Chios. Circa 435-425 BC. Hemidrachm (Silver, 18.5 mm, 3.34 g). Sphinx seated to left on ground line; to left, bunch of grapes over Chian amphora; to right, monogram of ΗΓ (?). Rev. Granulated quadripartite incuse square. Cf. BMC 27 (different monogram). Mavrogordato Period VI, 42 (but only drachms). Very fine.

From the Vineyard Collection, ex Antioch Associates, BBS 12, 3 November 1997, 29.