Portrait of an Unknown Boy

Painted on copper in 1680, this portrait of an unidentified boy at the Fondation Custodia, Paris, was made late in Coques's career when he was in his seventies — an age few seventeenth-century painters reached professionally active. The copper support in a late work is notable: Coques had used copper for his most refined small-format work throughout his career, and its choice here suggests either a wealthy patron's specific preference or the artist's own insistence on a quality support for a work he wished to demonstrate his enduring technical skill. The Fondation Custodia, founded on the collection of Frits Lugt, holds exceptional drawings and paintings focused on Dutch and Flemish art; this work entered the collection as a distinguished example of the Antwerp cabinet portrait tradition. Unidentified boy portraits are among the more poignant category of seventeenth-century works — the sitter's name is lost, only his carefully rendered face surviving.

Late Coques on copper shows characteristic technical mastery undimmed by age: the translucent flesh modelling, precise lace detailing, and warm tonality remain consistent with his work forty years earlier. Copper's non-absorbent surface prevents paint from sinking in, preserving original colour saturation across centuries in ways that canvas rarely matches.