Neoclassical hardstone sardonyx cameo of the three emperors?

Code: 11403

This is a wonderful hardstone cameo of three male heads, dating to the early to mid 19th century. the portraits are likely representative of the three emperors (of 69 AD) Galba, Otho, and Vitellius. The gem is set in a simple gold metal bevel with no signs of attachment, so likely was mounted in a frame as a piece of cameo art, purchased on a Grand Tour.  

OBJECT: Cameo

CULTURE: Neoclassical

DATE: 19th century A.D.

MATERIAL: Sardonyx

SIZE: 21.22mm x 18.57mm x 5.42mm

WEIGHT: 3.61 grams

PROVENANCE: Formerly in a private collection, Tours. France.