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
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
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
Sold20205 Physical Demonstration Instruments, c. 19205 Physical Demonstration Instruments, c. 1920 1) "Mammoth" X-ray air-cooling tube with regeneration device, made by Cuthbert Andrews, England, length 20 in. - 2) Crookes cathode ray tube, for demonstrSee 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
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
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 9Â 7/8 in., tube length 10Â 1/5 in., good condition, untested. Elektromagnetischer Motor mit rotierenSee Sold Price
Sold2017Large Electro-Magnetic Motor with Rotating GeisslerLarge Electro-Magnetic Motor with Rotating Geissler Tube, c. 1910 Physical demonstration model, height 18 ¼ in., for tubes of up to 15 3/4 in. length, brass and steel, on walnut base, later tube, veSee Sold Price
Sold2016Electric Motor with 10 Geissler Tubes, c. 1910Electric Motor with 10 Geissler Tubes, c. 1910 Physical demonstration model with rotating Geissler tubes, on brass pillar and walnut base, height 7 ½ in., with 10 tubes of various shapes and colors.See Sold Price
Sold2020Electro-Magnetic Motor with Rotating Geissler Tube, c.Electro-Magnetic Motor with Rotating Geissler Tube, c. 1890 Physical demonstration model, two electro-magnets, on wood pillar, with wood and brass holder and original Geissler tube, for creating a dazSee Sold Price
Sold2016Ampère Table, c. 1900Ampère Table, c. 1900 Physical demonstration model, used for experiments on the relationship between magnetic fields and electric currents, probably France, with pole changer, overall height 15 3/4 iSee Sold Price
Sold2016Electromagnetic Motor with Geissler Tube, c. 1900Electromagnetic Motor with Geissler Tube, c. 1900 Physical demonstration model, for tubes up to 6 in., overall height 8 in. Elektromagnetischer Motor mit Geißler'scher Röhre, um 1900 PhysikalischesSee Sold Price
Sold2016Ampère Table, c. 1910Ampère Table, c. 1910 Physical demonstration model, used for experiments on the relationship between magnetic fields and electric currents, originally with mercury filling, with 2 plaques: "InstrumenSee 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 Großes physikalisches Demonstrationsmodell, mSee Sold Price
Sold2024Lot of 2 Early 20th Century Telegraph PiecesIncluding c 1910-1920 SIGNAL ELECTRIC CO Brass Bodied RADIO Telegraph Lever KEY and a WWII knee mount telegraph model j-37, Winslow tele-tronics. Measures 3" to 4" eachSee 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
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
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 ½ and 9 7/8 in. 2 Demonstrationsmodelle "Influenz-Elektrizität", um 1900See Sold Price
6 days LeftJeffrey S. Evans & AssociatesLOUISVILLE AND NEWPORT, KENTUCKY RETAILED STERLING AND COIN SILVER SERVING UTENSILS, LOT OF TWO$40
6 days LeftJeffrey S. Evans & AssociatesPARIS, KENTUCKY AND OTHER COIN AND OTHER SILVER SPOONS, LOT OF FIVE$50
1 day LeftLadenburger Spielzeugauktion GmbHmixed lot different manufacturers, SPW, models, and others, model vehicles, partially in box, good€30
1 day LeftLadenburger Spielzeugauktion GmbHmixed lot of c. 25 model vehicles, plastic, early GDR production, various utility vehicles, unmarked€30
9 hrs LeftCurated AuctionsA FRENCH ART DECO BRONZE MODEL OF SKIERS ON WHITE STONE BASE, R DAVID c.1920£1,000
5 days LeftMatsart Auctioneers and Appraisers LTD.Abraham Weinbaum 1890-1943 (Ukrainian) Portrait of a Jewish boy, c.1920 oil on cardboard$890
Jul 11Dan Morphy AuctionsWAYNE MODEL #515 TEN GALLON VISIBLE GAS PUMP RESTORED IN SHELL GASOLINE.$1,000
Jul 11Dan Morphy AuctionsWAYNE MODEL #515 TEN GALLON VISIBLE GAS PUMP RESTORED IN SHELL GASOLINE.$1,000