Oval, enamel, in a gold frame, engraved on the reverse, 3.5cm.
The Anglo-Irish Robert Boyle was a natural philosopher, chemist and inventor, who is generally recognised as one of the founders of modern chemistry.
Charles Boit (1662-1727) was a Swedish painter of Huguenot extraction.
He painted in vitreous enamels and worked mainly in France, Austria and England.
One of his pupils was Christian Friedrich Zincke (1683-1767), an artist who painted several miniatures in enamel of the 8th Earl of Exeter (1701-1754) and his family.
