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Displaying 291 to 310 of 655 records

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Heading Date Maker Place Materials Inv Num
View Record Siemens & Halske Experimental Radio Valve c. 1917 Siemens & Halske. Germany Glass, bakelite?, steel, assorted metals. 50748
View Record Generator Propellor Early 20th Century Unknown Unknown Steel, mahogany. 51047
View Record Small Buzzer Key With Base Early 20th Century Unknown Unknown Mahogany, brass, copper, plastic. 51297
View Record Assorted Early Coherer-Related Letters Early 20th Century Unknown Unknown Paper 51910
View Record 'Marconi' Wavemeter Type No 2 c. 1906 Marconi's Wireless Telegraph Co. Ltd. London Teak, glass, steel, ebonite, leather, assorted metals. 52068
View Record Large Main Morse Key Early 20th Century Marconi's Wireless Telegraph Co. Ltd. London, England Mahogany, brass, metal alloy, ebonite. 53026
View Record Triangular Base Early 20th Century Unknown Unknown Brass, iron, baize. 53033
View Record Two-Way Morse Key 1900s Siemens Bros. & Co. London Brass, ebonite, steel 53048
View Record Early Coherer c. 1902 Unknown Unknown Glass, copper?, assorted metals. 53061
View Record Interrupter Type 144 Early 20th Century Marconi's Wireless Telegraph Co. Ltd. London Cast iron, nickel, teak. 53329
View Record Radio Valve Type VU120A Mid 20th Century Unknown Unknown Glass, plastic?, steel, assorted metals. 53371
View Record Quenched Spark Disc Unit 20th Century Unknown Unknown Iron, nickel, ebonite, assorted metals. 53392
View Record Marconi's Parabolic Transmitter c. 1896 Guglielmo Marconi. England Wood, copper, ebonite, steel?, brass. 53586
View Record Precision Measuring Instrument With Case Mid 20th Century Cambridge Scientific Co. Ltd. Cambridge, England Ebonite, brass, baize, mahogany. 53614
View Record Exhibition Medal Esposizione Internazionale Dated 1956 Giannino. Italy Gilt metal. 53696
View Record 'Marconi' Direction Finder Type 11F c. 1920 Marconi's Wireless Telegraph Co. Ltd. London Teak, ebonite, glass, nickel, plastic?, assorted metals. 54065
View Record Large Iolanda Switchboard Early 20th Century Marconi's Wireless Telegraph Co. Ltd. London, England Ebonite, glass, copper, plastic?, steel?, brass, unidentified material. 54296
View Record Switch And Lamp Type 94 Early 20th Century Unknown Unknown Teak?, brass, glass, porcelain?, metal. 54481
View Record 'Melba' Telephone Microphone No C100L Dated 1920 Marconi Company. England Mahogany, brass, ebonite, cloth, nickel. 54651
View Record Terminal Early 20th Century Unknown Unknown Ebonite, brass?, steel. 54685

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