A formal seventeenth-century portrait engraving by Robert Nanteuil, depicting the Comte de Dunois with precise line work and heraldic detail.

This engraving by Robert Nanteuil depicts Jean-Louis-Charles d'Orleans-Longueville, Comte de Dunois, in a formal portrait format. Nanteuil, a master of the copperplate engraving technique during the seventeenth century, was the official portraitist to King Louis XIV. His ability to render textures, from the soft curls of the subject's hair to the stiff fabric of the collar, remains a hallmark of his technical precision.

The composition follows the conventions of the period, placing the subject within an oval frame. The surrounding border contains the sitter's name and titles, while the base of the frame features a coat of arms, signifying the aristocratic status of the Comte de Dunois. Nanteuil uses a system of fine lines and cross-hatching to create depth and volume, particularly in the shading of the face and the folds of the clothing. The lighting is controlled, drawing the viewer's attention to the subject's features while maintaining a sense of formal distance.

Nanteuil's work is documented in the catalogue raisonné of his prints, which records his extensive output of portraits of the French nobility and clergy. This specific print demonstrates his mastery of the burin, allowing for subtle gradations of tone that mimic the appearance of a painting. The inclusion of the artist's signature, 'R. Nanteuil sculpebat', and the date 1660, confirms its place within his mature period of production. This print offers a clear view into the aesthetic values of the French court, where portraiture functioned as a means of documenting lineage and social standing. The clarity of the line work and the balanced composition reflect the disciplined approach to printmaking that defined Nanteuil's career in Paris.