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Displaying 71 to 90 of 655 records

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Heading Date Maker Place Materials Inv Num
View Record Marconi Bellini-Tosi Direction Finder c. 1916 Marconi's Wireless Telegraph Co. Ltd. London Teak, brass, bakelite, ebonite, steel?, copper. 20815
View Record Morse Tape Inker c. 1900 Siemens Brothers. London Brass, mahogany, paper, assorted metals. 20877
View Record RCA Radiotron Cunningham Radio Tube Type 6B7 With Carton 20th Century RCA. New Jersey, USA Glass, plastic?, steel, assorted metals. 20953
View Record Marconi's Oil Righi Oscillator 1895 Augusto Righi. Bologna, Italy Mahogany, brass, ebonite, celluloid. 21300
View Record Marconi Crystal Receiver Type 31C 1910 Marconi's Wireless Telegraph Co. Ltd. London Ebonite, nickel, mahogany?, bakelite. 21573
View Record Syntoniser Early 20th Century Marconi's Wireless Telegraph Co. Ltd. London Ebonite?, iron?, teak. 21593
View Record Replica Righi Oscillator Late 20th Century Unknown Unknown Brass, ebonite?, plastic?, mahogany. 21726
View Record 4 Volt Fleming Oscillation Valve c. 1905 Royal Ediswan. London Brass, glass, assorted metals. 21763
View Record Fleming Valve c. 1905 Ediswan. London Glass, assorted metals, brass. 21803
View Record Mullard Radio Valve Type PM4 1930s Mullard. England Glass, steel, bakelite, assorted metals. 21856
View Record 'Marconi' Self-Monitoring Receiver Type AD98 Mid 20th Century Marconi's Wireless Telegraph Co. Ltd. England Steel, plastic?, perspex, assorted metals. 22068
View Record Company Seal Embosser Dick Kerr & Company 20th Century Jordan & Sons Ltd. London Cooper, brass, steel, wood, baize. 22130
View Record Forward 'B' Spark Wavemeter No. 1339 c. 1918 War Department Signals Flying Corps. Britain Steel, brass, bakelite?, teak, carborundum. 22136
View Record RCA Radiotron Radio Tube Type 6C6 With Carton 20th Century RCA. USA Glass, steel, plastic?, assorted metals. 22269
View Record Round Radio Valve Type N c. 1915 Ediswan. London Glass, steel, asbestos, platinum-iridium, assorted metals. 22293
View Record Ediswan Radio Valve Type ATP4 With Carton Mid 20th Century Siemens Edison Swan Ltd. London Glass, steel, plastic?, assorted metals. 22414
View Record 'Marconi' Auto-Alarm Selector Type 333 c. 1920 Marconi's Wireless Telegraph Co. Ltd. London Metal, brass, steel?, aluminium, glass. 22770
View Record RCA Radiotron Cunningham Radio Tube Type 5Z3 With Carton 20th Century RCA. New Jersey, USA Glass, ribbon, steel, plastic?, assorted metals. 22875
View Record Marconi-Osram Radio Valve Type R c. 1923 Marconi-Osram Valve Co. Ltd. London Glass, phosphorous, nickel?, plastic?, steel, assorted metals 22908
View Record Marconi Commemorative Plaque Dated 1912 Unknown Italy Brass 23050

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