Abstract: A graphic display device illuminates interchangeable graphic panels and is mountable to a translucent mounting surface. The graphic display device includes a housing assembly, a light source assembly, a light guide assembly, and device-to-surface mounts. The housing assembly includes a housing back, a housing front, and peripheral housing edging. Together, the housing back and housing edging define a panel-receiving volume. The light source assembly includes a power source, a light source, and circuitry. A light guide of the light guide assembly is positionable within the panel-receiving volume for guiding light from the light source in an anterior direction. The device-to-surface mounts fasten the graphic display device to a translucent mounting surface, and are cooperably associated with the peripheral housing edging for supporting the housing assembly such that the light from the light source is guided in an anterior direction through the translucent mounting surface.