Sold2020Very Large Induction Coil by Max Kohl, c. 1915Very Large Induction Coil by Max Kohl, c. 1915 Max Kohl, Chemnitz, Germany. Coil length 12 ¼ in., length of the spark gap approx. 6 in., with mercury and platinum interrupters and Ruhmkorff's commutaSee Sold Price
Sold2020Large Induction Coil According to Ruhmkorff, c. 1910Large Induction Coil According to Ruhmkorff, c. 1910 Manufactured by AEG, Berlin. For spark length up to 10 in., overall size 34 x 10 5/8 x 18 ¼ in., good original condition. Großer Funkeninduktor nSee Sold Price
Sold2016Large Induction Coil with Mercury Interrupter, c. 1910Large Induction Coil with Mercury Interrupter, c. 1910 Coil length 19 5/8 in., spark length up to 9 7/8 in., on wood base, size 32 1/3 x 14 1/5 in. An impressive exhibition item! Großer FunkeninduktoSee Sold Price
Sold2020Large Induction Coil According to Ruhmkorff, c. 1910Large Induction Coil According to Ruhmkorff, c. 1910 Manufactured by Siemens & Halske. For spark length up to 6 in., with commutator, length of the coil 15 2/5 in., overall size 30 x 10 5/8 x 16 ½ inSee Sold Price
Sold2015Large Induction Coil According to Ruhmkorff, c. 1900Large Induction Coil According to Ruhmkorff, c. 1900 No. 7934, manufactured by Fr. Klingelfuss & Co., Basel. Coil length 16 ½ in., Ø 8 ¾ in., on walnut base. Großer Funkeninduktor nach Ruhmkorff,See Sold Price
Sold2020Large Induction Coil by Siemens & Halske, c. 1910'Large Induction Coil by Siemens & Halske, c. 1910 For "Gesellschaft für drahtlose Telegraphie", type RF ms2, 17 ¾ x 9 7/8 x 11 2/5 in. 'Großer Funkeninduktor von Siemens & Halske, um 1910 Für "GeSee Sold Price
Sold2022A Very Large Induction Coil,English, c.1900, unsigned the secondary coil with vulcanite separator and supported on wooden uprights, on large French polished mahogany base with brass lacquered terminals, tall upright insulators tSee Sold Price
Sold2023A Very Large Induction Coil,A Very Large Induction Coil, English, c.1900, unsigned the secondary coil with vulcanite separator and supported on wooden uprights, on large French polished mahogany base with brass lacquered terminaSee Sold Price
Sold2023A Large Induction Coil,A Large Induction Coil, English, c.1890, with plaque for 'F. E. BECKER & CO 33-37 HATTON WALL LONDON', on a large French polished mahogany plinth base with Ruhmkorff switch large adjustable interrupteSee Sold Price
Sold2020Large 16-Inch Induction Coil According to Ruhmkorff, c.Large 16-Inch Induction Coil According to Ruhmkorff, c. 1910 No. 997, manufacturer: "Watson & Sons (Electro-Medical) Ltd.", London, for spark lengths up to 16 in., overall size 34 x 13 1/3 x 18 ¼ in.See Sold Price
Sold2020Large "Nivoc" Laboratory Induction Coil, c. 1930Large "Nivoc" Laboratory Induction Coil, c. 1930 W. and J. George and Becker Limited, Birmingham and London. Coil length 13 in., length of the spark gap approx. 5 in., with Ruhmkorff's commutator, onSee Sold Price
Sold201919TH C NATIVE AMERICAN INDIAN LARGE COIL BASKET:Bulbous shape with flaring top. Overall zig zag design rows. Measures 15 inches wide x 19 inches tall.See Sold Price
Sold2023English Laboratory Induction Coil, c. 1900English Laboratory Induction Coil, c. 1900 James Morris, Bolton. Coil length 12 in., length of the spark gap approx. 4 in., with Ruhmkorff's commutator, on polished mahogany base, size 21 x 11 in. - TSee Sold Price
Sold20203 Induction Coils and 5 Leyden Jars3 Induction Coils and 5 Leyden Jars 1) 10 ½ in. induction coil by Griffin & George, Great Britain. With commutator and spark gap, on mahogany base, 18 x 11 in. - 2) 6-inch induction coil, unmarked, wSee Sold Price
Sold2021Igbo/Yoruba Peoples, (2) large coil currencyIgbo/Yoruba Peoples, (2) large coil currency, Nigeria, wrought copper alloy, 19"l (larger), 10"l (smaller) Provenance: Estate of Distinguished Professor Philip Gould, NYC Notes/Literature: Professor oSee Sold Price
Sold2023An Unusual Induction Coil,An Unusual Induction Coil, English, c.1900, engraved on the coil, 'P HARRIS & Co. Ld. BIRMINGHAM', the coil mounted on a French polished mahogany plinth base with all lacquered brass fittings and termSee Sold Price
Sold2023Large Pre-Columbian-Style Incised Jaguar Effigy Pot - A large coil formed terracotta pot having aLarge Pre-Columbian-Style Incised Jaguar Effigy Pot - A large coil formed terracotta pot having a gray slipped ground with extensive and elaborate incised decoration; arrow spirals and two jaguar effiSee Sold Price
Sold2021Norwegian Wall-Mount Switchboard, c. 1890Norwegian Wall-Mount Switchboard, c. 1890 By Wingers Elektriske Værksted. Walnut case, 15 lines, 3-part induction coil, 6 plugs with weights (wiring renewed), handset with speaking horn, lightninSee Sold Price
Sold2023French Experiment Box for Demonstrating Electricity, c. 1910French Experiment Box for Demonstrating Electricity, c. 1910 Electricité, with 2 chromic acid cell batteries, induction coil, 2 Geissler tubes, magneto-electro motor with mount for tubes, 2 lampsSee Sold Price
Sold2017Telephone Switchboard, c. 1910Telephone Switchboard, c. 1910 With plugs and flaps, five-part induction coil, crank, handset with speaking horn, and mahogany case, height 22 ½ in. Telephonzentrale, um 1910 Mit Stöpseln und KlSee Sold Price
Sold2022Nikola Tesla Signed Typewritten Letter CutNikola Tesla (July 10, 1856 – January 7, 1943) signed typewritten letter cut. After emigrating to the U.S. in 1884, Tesla invented the induction coil or Tesla Coil a device essential to sendingSee Sold Price
Sold2021Early Wall Telephone by L.M. Ericsson, c. 1890Early Wall Telephone by L.M. Ericsson, c. 1890 Stockholm, model 325, fixed carbon microphone, Bell-type handset, 3-part induction coil, double bell, lightning protection, ornate walnut case, writing dSee Sold Price
Sold2022Early Wall Telephone by L.M. Ericsson, c. 1890Early Wall Telephone by L.M. Ericsson, c. 1890 Stockholm, model 301 (new no. AB 210), fixed carbon microphone no. 570 on arm, Bell-type handset, 3-part induction coil, double bell, lightning protectioSee Sold Price
Sold2018German Wall Telephone Model M1903German Wall Telephone Model M1903 Manufacturer "P.Z. & Co.", no. 1143, moveable mouthpiece, Siemens & Halske receiver, 3-part induction coil, wood case. Deutsches Wandtelephon Modell M1903 HerstellSee Sold Price
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