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Displaying 531 to 550 of 655 records

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Heading Date Maker Place Materials Inv Num
View Record Replica Morse Key Late 20th Century Unknown Unknown Teak, plastic?, brass. 94821
View Record Replica Morse Key Late 20th Century Unknown Unknown Teak, plastic?, brass. 44566
View Record Replica Of Parabolic Receiver For Marconi's Original Beam System 1920s/1930s Marconi's Wireless Telegraph Co. Ltd. London Wood, glass, copper, ebonite, assorted metals. 40344
View Record Replica Of Parabolic Transmitter For Marconi's Original Beam System 1920s/1930s Marconi's Wireless Telegraph Co. Ltd. England Wood, copper, brass, steel?, ebonite. 59943
View Record Replica Righi Oscillator Late 20th Century Unknown Unknown Brass, ebonite?, plastic?, mahogany. 70590
View Record Replica Righi Oscillator Late 20th Century Unknown Unknown Brass, ebonite?, plastic?, mahogany. 21726
View Record Replica Righi Oscillator Late 20th Century Unknown Unknown Brass, ebonite?, plastic?, mahogany. 79026
View Record Reproduction Photograph Of Dame Melba 20th Century Unknown England Cardboard, photographic paper. 89558
View Record Republic Radio Tube Type 6F5G With Carton 20th Century Republic Radio Manfacturing Corporation. New Jersey, USA Plastic?, glass, steel, assorted metals 56270
View Record Righi Oscillator 1896 Augusto Righi. Bologna, Italy Brass, ebonite, mahogany. 67799
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

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