Watch List notes:

ROMAN. Gold and rock crystal ring with intaglio. Circa 1st century AD. (23mm x 20mm). AV ring with filigree border with centrally set intaglio in rock crystal of a couple engaged in coitus. As made.

Reportedly ex Malter Galleries 78 (25 February 2001), lot 105, with Christies tag, lot TL 937/2.