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Displaying 321 to 420 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
View Record Bell Telephone Microphone c. 1923 Unknown England Ebonite, cast brass, steel?, nickel. 64147
View Record Radio Valve Type ARP12 c. 1939 Unknown England Glass, plastic?, steel, assorted metals. 64286
View Record Company Seal Embosser Firth Cleveland Instruments Ltd 20th Century Unknown Britain Steel, nickel, wood. 64400
View Record Tuned Circuit Transmitter c. 1900 Marconi's Wireless Telegraph Co. Ltd. London Mahogany, plastic, celluloid, brass, glass, steel. 64464
View Record RCA Radiotron Radio Tube Type 6C6 With Carton 20th Century RCA. New Jersey, USA Glass, steel, plastic?, assorted metals. 64468
View Record Porcelain Insulators 20th Century Unknown Unknown Porcelain, brass, steel?, ebonite. 64661
View Record Marconi-Osram Radio Valve Type DET 1A 20th Century Marconi-Osram Valve Co. Ltd. London Glass, nickel-plated, brass, plastic?, assorted metals. 64933
View Record Rogers Radio Tube Type VR56 Mid 20th Century Rogers Canada. Canada Glass, steel, plastic?, assorted metals. 64947
View Record Trembler Coil c. 1907 Marconi's Wireless Telegraph Co. Ltd. England Teak, bakelite, steel, nickel. 64976
View Record Rotary Spark Discharger c. 1906 Unknown Unknown Steel, brass, cast-iron, 64999
View Record Stud Field Regulating Rheostat Early 20th Century Electric Construction Co. Ltd. Wolverhampton, England Brass, steel, iron, metal alloys 65352
View Record Alexandra Palace Mast 1936 Marconi's Wireless Telegraph Co. Ltd. Britain Iron, assorted metals, oak?. 65804
View Record Large Fixed-Gap Discharger With Case Early 20th Century Marconi's Wireless Telegraph Co. Ltd. London, England Teak, brass, lead?, metal alloy, sand?, ebonite?, steel. 65806
View Record Portrait of Marconi 1914 Gustave Muranyi Unknown Oil, canvas, wood, brass, paper, cotton? 65827
View Record 'Marconi' Direction Finder Type DFM2 c. 1927 Marconi's Wireless Telegraph Co. Ltd. London Teak, brass, ebonite, glass, bakelite, celluloid, steel. 65922
View Record Voltmeter With Case Early 20th Century Unknown Britain Oak, brass, glass, celluloid, paper, assorted metals. 65935
View Record Tuning Condenser c. 1916 Marconi's Wireless Telegraph Co. Ltd. England Brass, ebonite, celluloid. 66117
View Record 4 Volt Fleming Valve c. 1905 Royal Ediswan. London Teak?, glass, ebonite, metal alloy, nickel, assorted metals. 67148
View Record Fleming Valve c. 1905 Ediswan. London Copper, glass, brass, assorted metals. 67162
View Record Company Seal Embosser Robtron Controls Ltd 20th Century Jordan & Sons Ltd. London Steel, nickel, baize. 67172
View Record RCA Radiotron Cunningham Radio Tube Type 5Z4 With Carton Mid 20th Century RCA. New Jersey, USA Plastic?, steel, assorted metals. 67628
View Record Marconi Crystal Receiver Type 31C 1910 Marconi's Wireless Telegraph Co. Ltd. London Ebonite, brass, mahogany?, bakelite. 67687
View Record Righi Oscillator 1896 Augusto Righi. Bologna, Italy Brass, ebonite, mahogany. 67799
View Record Coherer Receiver 1902 Marconi's Wireless Telegraph Co. Ltd. London Mahogany, brass, steel. 67916
View Record Marconi Radio Valve Type FE2 c. 1922 Marconi's Wireless Telegraph Co. Ltd. London Glass, nickel?, assorted metals. 68373
View Record Receiver Type R1155A c. 1940 Air Ministry. Unknown Aluminium, bakelite?, perspex?, steel. 68465
View Record Low Frequency Iron Core Inductance In Wooden Box Early 20th Century Marconi's Wireless Telegraph Co. Ltd. London, England Iron, brass, teak. 68721
View Record Siemens & Halske Radio Valve Type RE87 20th Century Siemens & Halske. Germany Glass, steel, brass, bakelite?, assorted metals. 69068
View Record BBC-Marconi Ribbon Microphone Mid 20th Century Marconi's Wireless Telegraph Co. Ltd. London Copper, aluminium, bakelite?, assorted metals. 69070
View Record Mullard Radio Valve Type EF37A Mid 20th Century Mullard. England Glass, steel, plastic?, assorted metals. 69132
View Record Marconi Aerial Tuning Inductance Coil 1910 Marconi's Wireless Telegraph Co. Ltd. England Copper, nickel, teak?, brass. 69155
View Record RCA Radiotron Cunningham Radio Tube Type 6L7 With Carton Mid 20th Century RCA. New Jersey, USA Plastic?, steel, assorted metals. 69398
View Record Telephone Arc Transmitter 1910 Marconi's Wireless Telegraph Co. Ltd. London Ebonised wood, bakelite, mica, brass, teak?, assorted metals, wood 69632
View Record 'Marconi' Tuning Fork Type BS10 20th Century Marconi's Wireless Telegraph Co. Ltd. London Brass, copper, nickel, steel, iron. 69685
View Record Precision Instrument Early 20th Century Marconi's Wireless Telegraph Co. Ltd. London Bakelite, glass, brass, copper, assorted metal, iron` 69707
View Record Newton Induction Coil c. 1899 Newton & Co. London Mahogany, brass, ebonite, wax, paper, celluloid. 69748
View Record Company Seal Embosser J.W. Flower & Company Ltd 20th Century Unknown Britain Steel, wood, iron?, baize. 69851
View Record Crystal Valve Receiver c. 1910 Marconi's Wireless Telegraph Co. Ltd. London Teak, ebonite, brass, bakelite, copper, metal. 69868
View Record Radio Valve Type ARP12 c. 1939 Unknown England Glass, plastic?, steel, assorted metals. 69910
View Record Small Tuning Condenser c. 1916 Marconi's Wireless Telegrap Co. Ltd. England Mahogany?, ebonite, bakelite, celluloid, brass. 69944
View Record Giant Radio Valve 1910s GEC. England Glass, polymer, brass, plastic?, nickel. 70075
View Record Marconi Radio Valve Type DE6 c. 1925 Marconi-Osram Valves. England Glass, bakelite, brass?, assorted metals. 70143
View Record Marconi Radio Valve Type Q c. 1919 Ediswan. London Glass, steel, assorted metals. 70145
View Record 'Long Tom' Aerial Tuning Inductance Coil c. 1900 Marconi's Wireless Telegraph Co. Ltd. Unknown Copper?, wood, softwood, brass. 70198
View Record Weston Standard Cell Type D402B 20th Century Muirhead & Co. Ltd. Britain Bakelite, steel, plastic. 70200
View Record Marconi Plastic Bust 20th Century Unknown Unknown Plastic, brass. 70226
View Record Radio Valve Type ATP4 Mid 20th Century Unknown England Glass, plastic?, steel, assorted metals. 70312
View Record RCA Radiotron Cunningham Radio Tube 5Z4 With Carton Mid 20th Century RCA. New Jersey, USA Plastic?, steel, assorted metals. 70529
View Record Two High Frequency Chokes In Mounted Cases Early 20th Century Unknown Unknown Mahogany, porcelain, copper, teak. 70536
View Record Morse Key Early 20th Century Elliot Brothers (London) Ltd. London Teak, bakelite?, brass. 70589

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