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Heading Date Maker Place Materials Inv Num
View Record Assorted Copper Busbars And Ebonite Insulators Early 20th Century Unknown Unknown Copper, metal alloy?, ebonite. 79425
View Record Marconi Aerial Tuning Inductance Coil 1910 Marconi's Wireless Telegraph Co. Ltd. England Copper, nickel, teak?, brass. 69155
View Record Marconi Aerial Tuning Inductance Coil 1910 Marconi's Wireless Telegraph Co. Ltd. England Copper, nickel, teak?, brass. 47154
View Record Graduated Swivelling Coils For Triple Crystal Detector Early 20th Century Unknown Unknown Copper, steel, tape. 28254
View Record 1901 Transatlantic Billi Condenser c. 1901 Unknown Unknown Copper, waxed paper. 94060
View Record De Forest Audiotron Radio Valve Early 20th Century De Forest. Unknown Copper?, glass, assorted metals. 99552
View Record Experimental Billi Condenser c. 1900 Unknown Unknown Copper?, steel?, ebonite, brass, mahogany, plywood, bakelite, celluloid. 24292
View Record 'Long Tom' Aerial Tuning Inductance Coil c. 1900 Marconi's Wireless Telegraph Co. Ltd. Unknown Copper?, wood, softwood, brass. 70198
View Record Aerial Lead-In Insulator Early 20th Century Unknown Unknown Earthenware, copper, iron. 26677
View Record Aerial Lead-In Insulator Early 20th Century Unknown Unknown Earthenware, copper, iron. 17338
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 Morse Twin-Contact Key 20th Century Unknown Britain Ebonite, bakelite, glass, nickel?, brass. 96935
View Record Marconi Crystal Receiver A Type RB3 1922 Marconi's Wireless Telegraph Co. Ltd. England Ebonite, bakelite, steel, nickel, brass, paper, assorted metals. 93260
View Record Precision Measuring Instrument With Case Early 20th Century Cambridge Scientific Co. Ltd. Cambridge, England Ebonite, brass, baize, mahogany. 41846
View Record Precision Measuring Instrument With Case Mid 20th Century Cambridge Scientific Co. Ltd. Cambridge, England Ebonite, brass, baize, mahogany. 53614
View Record Triple X-Stopper Early 20th Century Marconi's Wireless Telegraph Co. Ltd. London Ebonite, brass, mahogany, metal alloy. 87224
View Record Marconi Crystal Receiver Type 31C 1910 Marconi's Wireless Telegraph Co. Ltd. London Ebonite, brass, mahogany?, bakelite. 67687
View Record Tuning Condenser No 4 c. 1906 Marconi's Wireless Telegraph Co. Ltd. England Ebonite, brass, paper. 20696
View Record Terminal Early 20th Century Unknown Unknown Ebonite, brass?, steel. 54685
View Record Bell Telephone Microphone c. 1923 Unknown England Ebonite, cast brass, steel?, nickel. 64147

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