18th-19th century AD. A bronze ring with U-section shank, the shank formed as two-headed snake biting the legs of a siren, the siren in high-relief with flowing hair, raised lentoid bezel with beaded rim, intaglio image of a male bust on a hatched background. 5.66 grams, 24.53mm overall, 19.02mm internal diameter (approximate size British O, USA 7, Europe 14.98, Japan 14) (1"). Property of a London lady, part of her family's Swiss collection; formerly acquired in the 1980s. [No Reserve]