1st century BC-early 1st century AD. A carved chalcedony finger ring with D-section hoop and ellipsoid plaque with intaglio busts of Hercules and Apollo. Cf. Chadour, A.B. Rings. The Alice and Louis Koch Collection, volume I, Leeds, 1994, item 177 for type. 6.52 grams, 22.85mm overall, 13.49mm internal diameter (approximate size British E, USA 2 1/4, Europe 2.41, Japan 2) (3/4"). Property of a London lady, part of her family's Swiss collection; formerly acquired in the 1980s.