Louis-Marin Bonnet (after François Boucher), head of a girl turned to the right, 1767

A colorful, engraved piece of metal with the portrait of a young woman whose head is turned toward the right.

Chromochalcography. Gift of Sylvester Rosa Koehler. Cat. No. 229.

This study of a young girl was one of eighteen examples illustrating how the intaglio technique of copper engraving, normally a black-and-white process, could be applied to color printing by using multiple plates to create the image. The exhibition’s section on intaglio featured examples of mezzotint, aquatint, etching, and drypoint, as well as the crayon manner seen here.