Royal Ediswan carbon filament light bulb, 100 volts, 16 cp (candle power). Royal Ediswan carbon filament light bulb
Black uv (ultra-violet) light bulb by Mazda, 12V, 36W, Army issue, used in the headlamps of World War II truck convoys to reduce the risk of detection from the air. Made by British Thomson-Houston Co. Ltd., c1939-c1944. Mazda circa 1939-circa 1944
Light bulb, LNER. Osram 240V 20W light bulb marked "LNER" ex-Hull Docks Light bulb, London & North Eastern Railway
Aircraft Landing Light Bulb, gas filled, made by Siemens during 1930-1940. Aircraft Landing Light Bulb 1930-1940
Electric light bulb, London & North Eastern Railway, for railway carriage use, 24V 15W opal globe, by Royal Ediswan, England, c1939, glass etched LNER. LNER electric light bulb 1939
Light bulb, LNER. Osram 240V 20" light bulb marked "LNER" ex-Hull Docks Light bulb, London & North Eastern Railway
Light bulb, LMS. "Osram" light bulb with LMS printed on glass. Dimensions 5"x2 1/2" diam. Light bulb, London Midland & Scottish Railway