This type of light, while used prior to WWII found its true calling during the naval campaigns from 1941-1945. Naval signal lights have had a long and prosperous history in our Navy. Unfortunately, in 2004, the U.S. Navy put the signal men program out of service The newest forms of communication made them obsolete in the eyes of those in charge of spending. This extremely rare and unique light has many functional uses outside of coordinating attacks on the open water. It would look great in any industrial setting or just as reading light during those long, dark, cold, winter nights.