Crystoleum, Portrait of a North African Woman
 signature in the upper right corner
 Period frame in wood and gilded stucco.
 Image size: 10 x 12 cm
 Frame size: 22 x 25 cm
 A crystal print is a hand-painted photograph fixed under glass. An albumen print is glued onto a concave piece of glass, the paper backing is then rubbed away, and the remaining image is hand-colored with oil paints. This extremely expensive process was used for a short period from 1880 to 1910.