Sold2017Tesla Coil Demonstration Model, c. 1915Tesla Coil Demonstration Model, c. 1915 With label: "Elektro Vulkan, Kromeriz", circular wood base, inner coil on porcelain isolator, outer coil on 3 glass columns, height 15 ΒΎ in., Γ 10 1/5 in.,See Sold Price
Sold20173 Electro-Physical Demonstration Models, c. 19153 Electro-Physical Demonstration Models, c. 1915 1) Stand with 2 copper spirals separated by a glass cylinder, with an incandescent lamp, height 13 in. - 2) Kolbe's electrometer, aluminum, standard bSee Sold Price
Sold2017Electro-Magnetic Motor with Rotating Geissler Tube, c.Electro-Magnetic Motor with Rotating Geissler Tube, c. 1915 Physical demonstration model, height 9Β 7/8 in., tube length 10Β 1/5 in., good condition, untested. Elektromagnetischer Motor mit rotierenSee Sold Price
Sold2017Group of Vacuum Tubes, c. 1915Group of Vacuum Tubes, c. 1915 Physical demonstration models. 1) Geissler tube lighting up by friction, length 19Β 1/3 in. β And: 2) 10 various Geissler tubes, 2 of them liquid-filled, some uraniumSee Sold Price
Sold2015Electrophysical Demonstration Model, c. 1890Electrophysical Demonstration Model, c. 1890 France, marked "HRFA", mahogany, thick-walled glass container (fixed to the base), 6 electric connections, 2 coils, 2 electrodes inside of the glass, one sSee Sold Price
Sold2017High-Voltage Apparatus after Tesla, c. 1980High-Voltage Apparatus after Tesla, c. 1980 Large physical demonstration model, with spark gap, height 23 in. Hochspannungsapparat nach Tesla, um 1980 GroΓes physikalisches Demonstrationsmodell, mSee Sold Price
Sold2017Early Radio Receiver, c. 1925Early Radio Receiver, c. 1925 Demonstration model, ebonite plate, 2 tubes (RE134, A408), Audio Frequency Transformer Type R-12, plug-in coil, swivel coil, variable capacitor, 2 potentiometers, size 3See Sold Price
Sold2018Bell Telephone Demonstration Model, c. 1900Bell Telephone Demonstration Model, c. 1900 Manufacturer: E. Leybold's Nachfolger, Coeln-Rhein. Open-works telephone model for demonstrating the mechanism, on mahogany base, very good original conditSee Sold Price
Sold20183 American Steam-Engine Demonstration Models, c. 19103 American Steam-Engine Demonstration Models, c. 1910 1) Cast-iron model of a railroad locomotive engine, reversible, with Stephenson steering, hand-cranked, width 18 ¼ in. - 2) Steam motor, casSee Sold Price
Sold2023Continental Typewriter Demonstration Model, c. 1935Continental Typewriter Demonstration Model, c. 1935 Official model of Wanderer-Werke, Siegmar-Schönau, no. P072545, for demonstrating all functions of a typewriter, carriage movement defective, oSee Sold Price
Sold2023Group of Physical Demonstration Models, c. 1900Group of Physical Demonstration Models, c. 1900 1) Wimshurst's influence machine, Trüb, Fierz & Cie., Zurich, height 14 ½ in., complete, rubber straps need to be renewed. - 2) 8 chromic acidSee Sold Price
Sold20154 Interesting Physical Demonstration Models, c. 19004 Interesting Physical Demonstration Models, c. 1900 1) Ebert's phosphorescent lamp with 2 electrodes. β 2) Crookes' apparatus for experiments on radiant matter. β 3) Crookes' radiometer. β And:See Sold Price
Sold20164 Physical Demonstration Models, c. 19104 Physical Demonstration Models, c. 1910 1) Reflection and refraction apparatus by "Max Kohl, Chemnitz". β 2) Filament lamp on wooden stand. β 3) Voltmeter by "Radiguet Γ Paris", brass. β And:See Sold Price
Sold20162 Physical Demonstration Models, c. 19102 Physical Demonstration Models, c. 1910 1) Crookes' radiant matter tube, height 16 Β½ in. β And: 2) Winkelmann-type vacuum double bulb, 1 glass tip broken, height 15 ΒΎ in. 2 physikalische DemonstrSee Sold Price
Sold20166 Physical Demonstration Models, c. 19106 Physical Demonstration Models, c. 1910 1) 2 Leyden jars, height 15 and 20Β Β½ in. β 2) Discharger, with 2 ebonite handles and hinge. β And: 3) 3 conductors on glass pillars, one by Robert DrosteSee Sold Price
Sold20152 Electrostatic Induction Demonstration Models, c. 19002 Electrostatic Induction Demonstration Models, c. 1900 Glass balls with hanging gold strips, conductors on the top, height 7 Β½ and 9 7/8 in. 2 Demonstrationsmodelle "Influenz-ElektrizitΓ€t", um 1900See Sold Price
Sold20174 Demonstration Model Electric Motors, c. 19104 Demonstration Model Electric Motors, c. 1910 Various models and constructions, height up to 7 in., untested. 4 Demonstrationsmodelle Elektromotoren, um 1910 Unterschiedliche Bauformen und KonstruSee Sold Price
Sold2017Alternating Current Motor by J. Kalb & Co., c. 1915Alternating Current Motor by J. Kalb & Co., c. 1915 Model W8, 220 V, 1,9 A, 1/6 horsepower, 1300 rpm. Suitable for automatic pianos and orchestrions. Wechselstrom-Motor von J. Kalb & Co., um 1915 MSee Sold Price
Sold2020Very Large Induction Coil by Max Kohl, c. 1915Very Large Induction Coil by Max Kohl, c. 1915 Max Kohl, Chemnitz, Germany. Coil length 12 ΒΌ in., length of the spark gap approx. 6 in., with mercury and platinum interrupters and Ruhmkorff's commutaSee Sold Price
Sold2017Demonstration Telephone by Leybold, c. 1915Demonstration Telephone by Leybold, c. 1915 Marked: "E. Leybold's Nachfolger, KΓΆln" (E. Ley bold's Successor, Cologne). With carbon granule microphone, resistance, switch and box earphone. DemonstrSee Sold Price
Sold2018Demonstration Model AEG Hand Drill, c. 1950Demonstration Model AEG Hand Drill, c. 1950 Model UHB10, transparent plastic body, bakelite, in oak case, pressure switch on the front (defective), 23 3/5 x 13 ¾ in. Demonstrationsmodell AEG-HaSee Sold Price
Sold2024Johnson Fare Box, No 24, Model D, Trolley Car Cranker Box, C. 1915 - A model D Johnson Farebox,Johnson Fare Box, No 24, Model D, Trolley Car Cranker Box, C. 1915 - A model D Johnson Farebox, patented in 1914. With copper-tone plate on faretake side, hand painted "FARE 7c or 3 for 20", also tagSee Sold Price
Sold1915 King Model C Motor Car Owners Manual Care & Operation Instructions Original9"x6", the staple bound manual in good condition with light wear.See Sold Price
Sold20184 Telephones4 Telephones 1) Ericsson table phone, model 381, original handset, demonstration model without tin cover, c. 1902. - 2) French candlestick telephone by A. Burgunder, with second earphone by Unis FranSee Sold Price
6 days LeftToomey & Co. AuctioneersGeorg Jensen and Georg Jensen Inc. USA, Collection of ten serving articles$50(1 bid)
3 days LeftHudson Valley Auctioneers LLC Beacon NYPatent Model, electrical coil device, no label, maker is C.J.B. Gaume, wood base is split. Note, all$160(3 bids)
20 hrs LeftJay Anderson AuctionMarked (USFS Portable Telephone Model C No. 42 -R 9 - 1933) rare portable US Forest Service$150(4 bids)
BonhamsDAUM VITRIFIED GLASS VASE WITH APPLIED BLUE BERRIES, Nancy, France, c. 1915, turned walnut base,...$150
2 days LeftNCAGFrancois Bazin (Attr.) - Spiro, La force du vent, c. 1915 - Art Deco bronze sculpture!$10
4 days LeftHermann Historica GmbHA ulanka for the future peacetime uniform model 1915 for enlisted men in the Royal Saxon 2nd Uhlanβ¬4,400
May 22Hannam's Auctioneers LtdJ.Lizars Model C Challenge ANTIQUE CAMERA w/ Red Bellows. 14 cm x 12 cm.Β£5(1 bid)
20 hrs LeftJay Anderson AuctionHigh Quality Signed Edison Floor Model disk phonograph Model C-250 - luxury line "Disc" series in$125(2 bids)
May 18Rich Penn AuctionsPin-Up Art, Earl Moran "The Artist's Model", c.1934, Dunck's Superior in oval at lower left, Good$50(1 bid)