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Displaying 541 to 560 of 655 records

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Heading Date Maker Place Materials Inv Num
View Record Righi Oscillator 20th Century Marconi's Wireless Telegraph Co. Ltd. London Plastic, celluloid, mahogany, brass, ebonite, bakelite 91607
View Record Rogers Radio Tube Type VR56 Mid 20th Century Rogers Canada. Canada Glass, steel, plastic?, assorted metals. 82126
View Record Rogers Radio Tube Type VR56 Mid 20th Century Rogers Canada. Canada Glass, steel, plastic?, assorted metals. 64947
View Record Rotary Spark Discharger Early 20th Century Marconi's Wirelss Telegraph Co. Ltd. London Steel, brass, cast iron. 71249
View Record Rotary Spark Discharger c. 1906 Unknown Unknown Steel, brass, cast-iron, 64999
View Record Rotating Multiple Stamp Holder 20th Century E.M.R. London Steel 40066
View Record Round Radio Valve Type CA c. 1915 Ediswan. London Glass, oxide, platinum, asbestos, brass, ebonite. 32845
View Record Round Radio Valve Type CA c. 1915 Ediswan. London Glass, oxide, platinum, asbestos, brass, ebonite. 35122
View Record Round Radio Valve Type CA c. 1915 Ediswan. London Glass, oxide, platinum, asbestos, brass, ebonite. 13117
View Record Round Radio Valve Type N c. 1915 Ediswan. London Glass, steel, asbestos, platinum-iridium, assorted metals. 39244
View Record Round Radio Valve Type N c. 1915 Ediswan. London Glass, steel, asbestos, platinum-iridium, assorted metals. 22293
View Record S. E. Marchesi Marconi 1931 Sir Max Beerbohm London Paper, watercolour, plastic, metal, nylon? 16862
View Record Send/Receive Switch Type 103A Early 20th Century Marconi International Marine Communication Co. Ltd. London Teak, brass, steel, nickel. 49244
View Record Set Of Inductors Type TM1438 20th Century Marconi Instruments Ltd. England Wood, leather, steel, bakelite 23891
View Record Seven-Valve Receiver 1920 Marconi Scientific Instrument Co. Ltd. London Teak, ebonite, bakelite?, steel. 41936
View Record Ship's Bridge Telephone Early 20th Century Unknown Unknown Mahogany?, nickel, bakelite?, copper, plastic, assorted metals. 72842
View Record Ship's Bridge Telephone Early 20th Century Unknown Unknown Mahogany?, nickel, bakelite?, plastic, assorted metals. 57185
View Record Ship's Bridge Telephone Early 20th Century Unknown None Mahogany?, nickel, bakelite?, copper, plastic, assorted metals. 58568
View Record Ship's Direction Finder 1920s Unknown Unknown Glass, plastic, bakelite, teak?, copper, assorted metals. 35780
View Record Ship's Transmitter Jigger Early 20th Century Marconi's Wireless Telegraph Co. Ltd. England Brass, mahogany. 29208

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