Snuff box sized, this is a 19th Century French Limoges kiln-fired enamel trinket box worked very much like those of 4 centuries earlier. We have recently sold a larger casket similarly decorated. The Limoges enamels with this period look to them carry forward the oldest traditions and motifs. The portrait in miniature worked onto the lid is that of a King. This one would be a mid-1800s Grand Tour souvenir, and the shaped copper plaques comprising the entire lid and the entire base are particularly difficult to work, as the powdered enamels are applied in a liquid suspension but then melt into the glassine or porcelain-like surface during the firing in a kiln. I've tried doing kiln-fired enamel plaques, myself, and I can tell you I have the greatest respect for the Masters capable of creating one like this. Years and years of apprenticeship before the Masters rise to this art. Full measurements are noted on the photos.
Very good to excellent condition throughout, age and type considered. There are no chips, no losses to the beautiful enamel work, so it has been very well cared for for a century to century and a half. Photographed from all sides for your review. Gorgeous work, exquisite old treasure!