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Displaying 321 to 370 of 655 records

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Heading Date Maker Place Materials Inv Num
View Record Wireless Telegraphy Notice Mid 20th Century Unknown Britain Mahogany, glass, paper. 56300
View Record Forward Spark 'B' Wavemeter No. 2006 c. 1918 War Department Signals Flying Corps. Britain Steel, brass, bakelite?, teak, carborundum. 56341
View Record Proof Print of Marconi c. 1914 G. B. Black London Paper, plastic, cork. 56351
View Record Gray Magnetic Relay Key c. 1910 Marconi's Wireless Telegraph Co. Ltd. London Teak, iron?, ebonite? wood, metal alloy, silver. 56506
View Record 'Marconi' Wavemeter 20th Century Marconi's Wireless Telegraph Co. Ltd. London Boxwood, steel, bakelite?, leather, ebonite. 56547
View Record RCA Radiotron Radio Tube Type 6J7 With Carton Dated 1943 RCA. Philadelphia, USA Plastic?, steel, assorted metals. 56677
View Record RCA Radiotron Cunningham Radio Tube Type 5Z3 20th Century RCA. USA Glass, ribbon, steel, plastic?, assorted metals. 56681
View Record Marconi Commemorative Plaque Dated 1911 D. Sodini. Italy Brass, steel. 56721
View Record Sykes Microphone 1923 Sykes. England Paper, nickel?, steel, cast iron. 56738
View Record Ship's Bridge Telephone Early 20th Century Unknown Unknown Mahogany?, nickel, bakelite?, plastic, assorted metals. 57185
View Record RCA Radiotron Radio Tube Type 6D6 With Carton 20th Century RCA. New Jersey, USA Plastic?, steel, glass, assorted metals. 57337
View Record Osram Radio Valve Type P2 20th Century Osram. England Glass, bakelite?, steel, assorted metals. 57431
View Record Early Coherer c. 1899 Unknown France Glass, copper, nickel, silver, assorted metals. 57633
View Record Large Iolanda Transformer With Case Early 20th Century Unknown Unknown Mahogany, metal alloy, brass, copper, wood. 57720
View Record Potentiometer For Marconi Five-Valve Receiver 1922 Marconi Scientific Instrument Co. Ltd. London Bakelite?, copper, brass?, steel. 57736
View Record Marconiphone Universal Baby Crystal Receiver c. 1924 Marconiphone Co. Ltd. England Plastic, galena, nickel, steel, bakelite. 58056
View Record Ship's Bridge Telephone Early 20th Century Unknown None Mahogany?, nickel, bakelite?, copper, plastic, assorted metals. 58568
View Record Marconiphone Two-Valve Receiver Type V2A c. 1924 Marconiphone Co. Ltd. England Mahogany, celluloid, ebonite, bakelite, nickel, steel, glass, assorted metals. 58602
View Record Large Main Condenser With Case Early 20th Century Marconi's Wireless Telegraph Co. Ltd. London, England Wood, jute, brass, iron. 58903
View Record RCA Radiotron Radio Tube Type 6B7 With Carton 20th Century RCA. USA Glass, plastic?, steel, assorted metals. 58967
View Record Osram-GEC Radio Valve Type R4 c. 1916 Osram G.E.C. England Teak?, glass, brass, tungsten, assorted metals. 59017
View Record Marconi-Osram Radio Valve Type R c. 1923 Marconi-Osram Valve Co. Ltd. London Glass, nickel, plastic?, brass?, assorted metals. 59257
View Record Precision Instrument Model EGM2 Mid 20th Century Cambridge Instrument Co. Ltd. Cambridge, England Brass, iron, assorted metals. 59269
View Record 'Marconi Otophone' 1923 Marconi's Wireless Telegraph Co. Ltd. London Leather, celluloid, mahogany, plastic?, bakelite, glass, nickel. 59451
View Record Multiple Oscillator Early 20th Century Marconi's Wireless Telegraph Co. Ltd. London Celluloid, ebonite, steel?, brass. 59526
View Record 'Marconi' Lifeboat Transmitter Type 241A c. 1920 Marconi's Wireless Telegraph Co. Ltd. London Teak, glass, steel, plastic?, bakelite, assorted metals. 59677
View Record STC Radio Tube Type 6J5G Mid 20th Century Standard Telephones and Cables Ltd. (STC). England Glass, plastic?, steel, assorted metals. 59723
View Record B T-H Plaque 20th Century Unknown Britain Cast iron, paint. 59770
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 Marconi Telegraph Communication Chart c. 1922 Marconi International Marine Communication Co. Ltd. London Wood, glass, paper. 59984
View Record Marconi Radio Valve Type V24 c. 1918 Marconi's Wireless Telegraph Co. Ltd. England Glass, steel, assorted metals. 60590
View Record RCA Radiotron Radio Tube Type 6D6 With Carton 20th Century RCA. New Jersey, USA Plastic?, steel, glass, assorted metals. 60662
View Record Portable Valve Transmitter 1919 Marconi's Wireless Telegraph Co. Ltd. London Brass, nickel, teak, bakelite?, paper. 61008
View Record Small Coupled Two-Way Switch Early 20th Century Unknown Unknown Steel, brass, iron?, bakelite?, mahogany?, ebonite. 61022
View Record Single-Turn Primary Coil Early 20th Century Unknown Unknown Wood, brass. 61290
View Record Magneto-Electric Machine Late 19th Century Unknown Unknown Boxwood?, steel?, brass, velvet. 61523
View Record RCA Radiotron Cunningham Radio Tube Type 6D6 With Carton 20th Century RCA. New Jersey, USA Plastic?, steel, glass, assorted metals. 61674
View Record Trembler Coil c. 1907 Marconi's Wireless Telegraph Co. Ltd. England Teak, nickel, ebonite?, steel. 61771
View Record RCA Radiotron Acorn Radio Tube Type VT121 With Carton Mid 20th Century RCA. New Jersey, USA Glass, steel, assorted metals. 61791
View Record Marconi Five-Valve Receiver 1922 Marconi Scientific Instrument Co. Ltd. London Teak, nickel, ebonite?, copper, bakelite?, glass. 62304
View Record RCA Radiotron Cunningham Radio Tube Type 6L7 With Carton Mid 20th Century RCA. New Jersey, USA Plastic?, steel, assorted metals. 62344
View Record Marconi Radio Valve Type DE3C c. 1924 Marconi-Osram Valves. London Glass, bakelite, steel, tungsten, assorted metals. 62393
View Record Company Seal Embosser Elliot Flight Automation Ltd 20th Century Unknown Britain Steel, wood, brass, baize. 62415
View Record 'Marconi' Ammeter 20th Century Marconi's Wireless Telegraph Co. Ltd. England Glass, steel?, brass, copper?, nickel. 62660
View Record Lead-Acid Accumulator Early 20th Century Unknown Unknown Teak, leather?, brass. 62812
View Record Marconi Radio Valve Type DEV c. 1923 Marconi Valves. England Glass, steel, assorted metals. 62884
View Record Early Coherer c. 1902 Unknown Unknown Glass, elastic, copper?, steel, assorted metals. 62930
View Record Marconi Crystal Receiver Type 16 1916 Marconi's Wireless Telegraph Co. Ltd. London Ebonite, teak, bakelite, brass, steel?, copper. 63794
View Record Brimar Radio Valve Type 6V6GT 1940s Brimar. England Glass, plastic?, steel, assorted metals. 64011
View Record 120 Ohm Resistance Coil Early 20th Century Unknown Unknown Teak, steel, wax, assorted metals. 64043

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