Claude de Lorraine (1496-1550), was the first Duc de Guise and the grandfather of Mary, Queen of Scots.
He is portrayed against a blue ground, in an ermine-edged coat and black cap, wearing a gold chain around his neck.
In an ebonised wood frame with gilt-brass decoration and hardstone inserts, 36x30cm overall.
Léonard Limousin was the most famous of a family of enamel painters from the town of Limoges in south western France.
He was employed at the French court by Francis I (1494-1547) and Henry II (1519-1559), for both of whom he produced numerous enamel portraits.
He also created decorative works for the royal palaces and a variety of other items, including enamelled plates, ewers, cups and vases.