Original U.S. WWII US Navy Ships Morse Code Signal Lamp Shutter Assembly Receiver and unusually

and unusually

has all matching serial numbers 21200

"Sturmabteilung" (storm-troops)

with its bell having a 7 1/2" spread at the end of the flare

The fuze is armed if 4 screw threads at the base of the arming spindle are visible

Original U.S. WWII US Navy Ships Morse Code Signal Lamp Shutter Assembly Receiver and unusuallyOriginal Item: Only One Available. A signal lamp (sometimes called an Aldis lamp or a Morse lamp) is a semaphore system using a visual signaling device for optical communication, typically using Morse code. The idea of flashing dots and dashes from a lantern was first put into practice by Captain Philip Howard Colomb, of the Royal Navy, in 1867. Coulomb's design used limelight for illumination, and his original code was not the same as Morse code.