18th c. Woman in White Headdress - Miniature in Case

Woman in White Headdress, 18th c. watercolor framed in an oval case, with button clasp. There may have been something on the facing side, but it is empty now. There is a small hairline crack in the painting above her head and there are 2 hairlines in the outer case. None of these deter from the piece at all. Miniature measures 3 1/4" X 2". Case measures 3 9/10" X 2 1/4". Additional photos upon request.