DescriptionThis hand-painted, single-faced sign has a sand smalts background and is internally illuminated with lightbulbs. The light from the bulbs shine through individual glass letters that have been molded with a decorative, patterned surface. Each letter is hinged for changing the incandescent lightbulbs inside. Note the gilded copy at lower right reading "Pat. July 6 09 Flexlume Sign Co. Buffalo)