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 Großes physikalisches Demonstrationsmodell, mSee Sold Price
Sold20162 Dynamo-Electric Machines, c. 19102 Dynamo-Electric Machines, c. 1910 Physical demonstration models, 1 by Masquellier, Anvers, handcrank-driven, cast-iron wheels, on wooden boards, heights 12 ½ in. and 16 ½ in. 2 dynamoelektrische MSee Sold Price
Sold2017Group of Vacuum Tubes, c. 1915Group of Vacuum Tubes, c. 1915 Physical demonstration models. 1) Geissler tube lighting up by friction, length 19 1/3 in. – And: 2) 10 various Geissler tubes, 2 of them liquid-filled, some uraniumSee Sold Price
Sold2024Tellurium and Lunarium by Ernst Schotte, Berlin, c. 1890Tellurium and Lunarium by Ernst Schotte, Berlin, c. 1890 Physical demonstration model, 1:163 million scale, bronzed cast metal and brass, with hand-turned mechanism, the sun as a candle without reflecSee 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. – 2) Crookes' apparatus for experiments on radiant matter. – 3) Crookes' radiometer. – And:See Sold Price
Sold20164 Physical Demonstration Models, c. 19104 Physical Demonstration Models, c. 1910 1) Reflection and refraction apparatus by "Max Kohl, Chemnitz". – 2) Filament lamp on wooden stand. – 3) Voltmeter by "Radiguet à Paris", brass. – And: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
Sold20162 Physical Demonstration Models, c. 19102 Physical Demonstration Models, c. 1910 1) Crookes' radiant matter tube, height 16 ½ in. – And: 2) Winkelmann-type vacuum double bulb, 1 glass tip broken, height 15 ¾ in. 2 physikalische DemonstrSee Sold Price
Sold20166 Physical Demonstration Models, c. 19106 Physical Demonstration Models, c. 1910 1) 2 Leyden jars, height 15 and 20 ½ in. – 2) Discharger, with 2 ebonite handles and hinge. – And: 3) 3 conductors on glass pillars, one by Robert DrosteSee Sold Price
Sold2022Collection of Physical Demonstration Models and Technical DevicesCollection of Physical Demonstration Models and Technical Devices 1) Carbon arc lamp, demonstration model by John Browning, London, original lacquered brass, 2 graphite electrodes, one height-adjustabSee Sold Price
Sold20162 Physical Demonstration Models with 9 Geissler Tubes,2 Physical Demonstration Models with 9 Geissler Tubes, c. 1910 1) Stand with turning star and 3 tubes with uranium spirals. – And: 2) Isolated stand with 6 tubes of different shape and color, 2 of tSee Sold Price
Sold2020Group of Scientific InstrumentsGroup of Scientific Instruments Physical demonstration models and others: 5 various Crookes cathode ray tubes, 1 x-ray tube (defective), 15 glass valves, 4 stands, 3 Leyden jars, 2 glass tubes with meSee Sold Price
Sold2020Tellurium and Lunarium by Jan Felkl, Prague, c. 1880Tellurium and Lunarium by Jan Felkl, Prague, c. 1880 Physical demonstration model, signed on the earth globe: "Die Erde, Prag bei J. Felkl, No. 1", bronzed cast metal and lacquered brass, 2 1/3 in. plSee Sold Price
Sold2017Electro-Magnetic Motor with Rotating Geissler Tube, c.Electro-Magnetic Motor with Rotating Geissler Tube, c. 1915 Physical demonstration model, height 9 7/8 in., tube length 10 1/5 in., good condition, untested. Elektromagnetischer Motor mit rotierenSee Sold Price
Sold20204 Physical Demonstration Instruments4 Physical Demonstration Instruments 1) Tesla generator, 6 in. primary coil, 2 in. secondary coil, with spark gap, pillar 33 ½ in. high. - 2) Wimshurst's electrostatic machine, 2 Leyden jars, 2 plastSee Sold Price
Sold2022NEXT Voltage BikeModel 8535-99E. 26" wide X 56" long X 32" high. 19 1/2" tire. Has a few small paint chips and some scratches. MG. IMPORTANT: Before bidding, please read the terms and conditions. When you registered fSee Sold Price
2020GE Radio CabinetModel 41. 60 cycles. Voltage rating 105-125. 36 1/2" wide X 18 1/2" deep X 36" high. Radio powers on and gives feedback. Does not tune. Turn table spins. IMPORTANT: Before bidding, please read the terSee Sold Price
Sold20236 Typewriters Keyboard Demonstration Models6 Typewriters Keyboard Demonstration Models 1) Torpedo, wall-mounted model, with indication of the angle degree in 4 steps. - 2) 3 x Adler, table models, with key, lever and platen, 2 different modelsSee Sold Price
Sold2021MARKLIN D206 LOCOMOTIVE PASSENGER SET172. MARKLIN D206 LOCOMOTIVE PASSENGER SET | Gauge 1, high voltage electric, hand painted. | Loco 14" l. | Professional paint restoration in areas, Schlafwagen has paint chip touch-ups & replaced doorSee Sold Price
Sold2018Steam Engine and 2 Demonstration ModelsSteam Engine and 2 Demonstration Models 1) Massive single-cylinder steam engine motor, steel and brass, 2 flywheels, 6 ½ in. Ø each, cylinder Ø 2 ¾ in., 3 oil containers, size 17See Sold Price
Sold2021MARKLIN P.O. TUNNEL LOCOMOTIVE1026. MARKLIN P.O. TUNNEL LOCOMOTIVE | Gauge 1, high voltage electric, hand painted. | 14" l. | Roof replaced, wear to paint on one side, otherwise in All original condition. | $400 - $800See Sold Price
Sold20234 Typewriter Keyboard Demonstration Models4 Typewriter Keyboard Demonstration Models 1) Torpedo 6, table model, type-lever mechanism, with four angle indicators, back with description, official factory model. - 2) Wall model "Wagenaufzug" toSee Sold Price
Sold20235 Typewriter Demonstration Models5 Typewriter Demonstration Models 1) Olympia, electric, partial cutaway model, with motor, carriage and parts of the mechanism. - 2) Adler, working model with 5 keys, tabulator and keys for the carriaSee Sold Price
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