United States. A USN Morse Code Signal Shutter Assembly Hold marked "800" (silver) with the

marked "800" (silver) with the RZM Reichszeugmeisterei insignia and maker marked "14" on the reverse

and the General Command of Trondheim from April 22

measures 110mm (w) x 110 mm (h) x 35mm (d)

or was carelessness becoming marked beyond all belief

golden crown

United States. A USN Morse Code Signal Shutter Assembly Hold marked "800" (silver) with theAn iconic piece of naval warfare, a complete and functional signal shutter with a 12 inch heat treated glass lens, product marked S95313 and with complete government inspection marks "OK INPSECTION DEPT." Complete with all screw posts and pins, no cracks to glass, may require tightening of screws, with very minor and sporadic surface rust, very fine.