Opaline porcelain brass wall lamp early twentieth century

White opaline wall lamp with transparent circumference and porcelain frame and patinated brass. French work early twentieth century. Very good overall condition (note some original imperfections on the opaline. See photos and zoom). Works with bayonet bulb not included. The total height of the wall lamp is 20 cm and its total width (corresponding to the maximum diameter of the opaline) is 20.5 cm. The total depth at a distance from the wall when the wall lamp is fixed is 27 cm.