Gold ring set with a cameo of the ancient philosopher Plato, c1800

A gold ring set with an agate cameo carved with a herm of the ancient Greek philosopher Plato.

Italian, circa 1800.

The cameo measures 2.4 x 1.8cm.

The gold ring is a size O UK / 7 US (measured on the leading edge).

For a similar example see ‘La Collezione Paoletti, Stampi in vetro per impronte de intagli e cammei, Tomo II, cassetto 5, fig. 341’.