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Displaying 371 to 420 of 655 records

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Heading Date Maker Place Materials Inv Num
View Record Marconi Radio Valve Type DEQ c. 1923 Marconi Valves. England Glass, steel, assorted valves. 26547
View Record Marconi Radio Valve Type DEV c. 1923 Marconi's Wireless Telegraph Co. Ltd. England Glass, steel, assorted metals. 83921
View Record 'Marconi Otophone' 1923 Marconi's Wireless Telegraph Co. Ltd. London Leather, celluloid, mahogany, plastic?, bakelite, glass, nickel. 59451
View Record Marconi-Reisz Microphone c. 1923 Marconi's Wireless Telegraph Co. Ltd. London Carbon?, ebonite, mica, marble. 98482
View Record Horn Loudspeaker Type AR19 c. 1923 Graham Amplion Ltd. London Oak, brass, baize. 28052
View Record Marconi Radio Valve Type DEV c. 1923 Marconi Valves. England Glass, steel, assorted metals. 15771
View Record Marconi Radio Valve Type DEQ c. 1923 Marconi-Osram Valves. England Brass, glass, assorted metals. 74920
View Record Marconi-Osram Radio Valve Type R c. 1923 Marconi-Osram Valve Co. Ltd. London Glass, nickel, plastic?, brass?, assorted metals. 85569
View Record Marconi Radio Valve Type DE3 c. 1923 Marconi-Osram Valves. London Glass, steel, plastic?, brass?, assorted metals. 16810
View Record Marconi Radio Valve Type DEQ c. 1923 Marconi-Osram Valves. England Glass, steel, assorted metals. 20655
View Record Marconi Radio Valve Type DEV c. 1923 Marconi Valves. England Glass, steel, assorted metals. 62884
View Record Balloon Envelope Radio Valve 20th Century Unknown Unknown Glass, steel, bakelite, assorted metals. 92020
View Record Marconi Radio Valve Type DEQ c. 1923 Marconi Valves. England Glass, steel, assorted metals. 29390
View Record Marconi-Osram Radio Valve Type DER c. 1923 Marconi-Osram Valve Co. Ltd. London Glass, nickel, plastic?, brass?, assorted metals. 43964
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 Marconi Radio Valve Type DEV c. 1923 Marconi Valves. England Glass, steel, assorted metals. 75263
View Record Marconi Radio Valve Type DEV c. 1923 Marconi Valves. England Glass, steel, assorted metals. 94536
View Record Marconi-Osram Radio Valve Type DER c. 1923 Marconi-Osram Valve Co. Ltd. London Glass, steel, plastic?, brass?, assorted metals. 48922
View Record Marconiphone Two-Valve Receiver Type V2 1923 Marconi's Wireless Telegraph Co. Ltd. London Mahogany, glass, nickel, bakelite, ebonite, celluloid, steel. 15836
View Record Marconi Sykes Microphone c. 1923 Marconi's Wireless Telegraph Co. Ltd. London Iron, ebonite, brass, nickel. 79721
View Record Bell Telephone Microphone c. 1923 Unknown England Ebonite, cast brass, steel?, nickel. 64147
View Record Sykes Microphone 1923 Sykes. England Paper, nickel?, steel, cast iron. 56738
View Record Marconiphone Two-Valve Receiver Type V2A c. 1924 Marconiphone Co. Ltd. England Mahogany, celluloid, ebonite, bakelite, nickel, steel, assorted metals. 90029
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 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 Radio Valve Type V24 Early 20th Century Marconi's Wireless Telegraph Co. Ltd. England Glass, steel, assorted metals. 70906
View Record Marconi Radio Valve Type DE3C c. 1924 Marconi-Osram Valves. London Glass, bakelite, steel, tungsten, assorted metals. 20731
View Record Marconi Radio Valve Type V24 1920s Marconi Osram Valves. London Glass, steel, assorted metals. 90635
View Record Marconi Radio Valve Type V24 1920s Marconi-Osram Valves. London Glass, steel, assorted metals. 83077
View Record Marconi Radio Valve Type DE3C c. 1924 Marconi-Osram Valves. London Glass, bakelite, steel, tungsten, assorted metals. 62393
View Record Puratone Rubon Radio Valve 1924 Puratone Rubon. Britain Glass, plastic, steel, assorted metals. 31417
View Record Marconi-Osram Radio Valve Type DER 1920s Marconi-Osram Valve Co. Ltd. London Glass, steel, brass?, plastic?, assorted metals. 80189
View Record Philips Radio Valve Type R 1920s Philips. Holland Glass, steel, bakelite?, brass?, tungsten, assorted metals. 84869
View Record Myers Dry Battery Radio Tube With Carton c. 1924 E. B. Myers Co. Ltd. Canada Glass, bakelite, steel, assorted metals. 20141
View Record Myers Dry Battery Radio Tube With Carton c. 1924 E. B. Myers Co. Ltd. Canada Glass, bakelite, steel, assorted metals. 55098
View Record Lord Kelvin's Multicellular Voltmeter 1920s Kelvin Bottomley & Baird Ltd. Britain Teak, glass, steel, bakelite, ebonite, brass, iron. 47607
View Record Marconiphone Universal Baby Crystal Receiver c. 1924 Marconiphone Co. Ltd. England Plastic, galena, nickel, steel, bakelite. 58056
View Record Cylindrical Reflecting Vertical Galvanometer c. 1925 H. Tinsley & Co. London Brass, glass, copper, bakelite. 55299
View Record Marconiphone Two-Valve Receiver Type 21 1925 Marconiphone Co. Ltd. London Bakelite?, ebonite, glass, brass, mahogany, plastic? 18847
View Record American-Type Radio Tube 20th Century Unknown USA Glass, brass, bakelite?, assorted metals. 92814
View Record American-Type Radio Tube 20th Century Unknown USA Glass, brass, plastic?, assorted metals. 93609
View Record Marconi Radio Valve Type 42A 20th Century Officine Marconi-Genova. Italy Glass, steel, plastic?, assorted metals. 19824
View Record Siemens & Halske Radio Valve Type RE87 20th Century Siemens & Halske. Germany Glass, steel, brass, bakelite?, assorted metals. 69068
View Record Ship's Direction Finder 1920s Unknown Unknown Glass, plastic, bakelite, teak?, copper, assorted metals. 35780
View Record 'Marconi' Tuning Fork 20th Century Marconi's Wireless Telegraph Co. Ltd. London Brass, copper, nickel, steel, iron. 87284
View Record 'Marconi' Tuning Fork Type BS10 20th Century Marconi's Wireless Telegraph Co. Ltd. London Brass, copper, nickel, steel, iron. 69685
View Record Lamps For Large Switchboard Type 95 1920s Unknown England Glass, brass, assorted metals. 40261
View Record Four-Second Alarm Type KM1 20th Century Marconi's Wireless Telegraph Co. Ltd. London Iron, metal, nickel, glass. 13115
View Record Brownie Crystal Receiver No 2 c. 1925 Brownie Wireless Co. Ltd. Britain Ebonite, glass, assorted metals, copper. 16661
View Record Marconi Radio Valve Type V24 c. 1925 Marconi Valves. England Glass, steel, assorted metals. 25470

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