Although executed in the manner of Jean Petitot, the most important enamellist of the seventeenth century, this enamel is weaker in modelling. The costume, particularly the cravat, suggests a date of c. 1690 when Petitot had been forced to forgo his career as Court Painter in Enamel to Louis XIV and return to Geneva. It has therefore been suggested that the artist may be Petitot's son, Jean Petitot the Younger. The traditional identification of the sitter as Henri Jules de Bourbon, duc d'Enghien is supported by comparison with the engraving by Robert Nanteuil after Pierre Mignard, dated 1661. Henri Jules, duc d'Enghien was the son of Louis le Grand Condé and Claire Clémence de Maillé-Brézé.