It a decorative plate featuring Krystyna Potocka portrait by Angelika Kauffmann, Swiss painter and portraitist. The item had a mark of Karolina porcelain factory.
The Krystyna Potocka portrait that one can see on the plate is a copy of Angelika Kauffmann painting, Swiss painter and portraitist (1741-1807). There are clear influences of ancient and English art.
The plate itself is 24,5 cm in diameter. It is richly gilded.
The Karolina mark: