As I've said, there are 2 types of portrait miniatures: 1. a living person who sat for their portrait in real life, and 2. those done "après" famous works of art in the museums, fueled by the souvenir hungry Grand Tour travelers. This one is of the 2nd variety, and depicts Miss Elizabeth, sister of French King Louis XVI, sister in law to Marie-Antoinette. It is early 1800s, I'd say, and is signed by the artist who has copied earlier art. The painting is particularly fine for these Grand Tour souvenir miniatures. The opulent feathers atop her powdered big hair, the low reveal of her bodice being her signature and that of her time, which would have been 1750-80, 'til the end of her brother and sister in law at The Terror, and beheadings thereafter. A fine historical painting in the original wood frame with convex cover glass, very nicely preserved.
Very good to excellent, still sealed from the backside, so I've had to photograph her entirely through a convex cover glass, hence some glare from the lighting. No damage. Beautifully preserved as fine souvenirs were. Artist signature shown, not a listed artist but an adept one.