SoldDemonstration Model Telegraph, c. 1920Demonstration Model Telegraph, c. 1920 Ink writer and Morse key, clockwork, on ground plate, 10 5/8 x 4 ¾ in. Telegraphen-Lehrmodell, um 1920 Farbschreiber und Morse-Taster, Federwerk, auf GrundplattSee Sold Price
SoldGroup of Physical Demonstration Models, c. 1920Group of Physical Demonstration Models, c. 1920 1) Electromagnetic tuning fork. - 2) Sliding induction coil by Kagenaar, Utrecht. - 3) Cutaway model of an electric-driven sound generator. - 4) GalvanSee Sold Price
SoldDifferential Demonstration Model, c. 1920Differential Demonstration Model, c. 1920 Paul Schultze, Köthen, Germany. Iron and steel, rubber tyres, hand-cranked, length 11 3/5 in., working. Lehrmodell Differentialgetriebe, um 1920 Paul SchultzSee Sold Price
SoldBell-Type Telephone Demonstration Model, c. 1920Bell-Type Telephone Demonstration Model, c. 1920 Manufacturer: Phywe, Göttingen, Germany. Butterstamp telephone, 2 cutaway sections, for speaking and listening, with electric magnet, height 6 ¾ in.See Sold Price
SoldLot of Physical Demonstration Models, c. 1920Lot of Physical Demonstration Models, c. 1920 1) Wimshurst's "Voltana" electrostatic machine, height 17 in, complete working condition! - 2) 3 Geissler's tubes (2 of them with spirit), 1 small x-ray tSee Sold Price
SoldLot of Physical Demonstration Models, c. 1920Lot of Physical Demonstration Models, c. 1920 1) Wimshurst's electrostatic machine, manufacturer "Fritz Saran, Halberstadt", discs Ø 10 1/5 in., without crank. - 2) Galvanometer, manufacturer "W.J. HSee Sold Price
SoldPhysical Demonstration Models, c. 1920Physical Demonstration Models, c. 1920 1) Small Wimshurst's induction machine, complete but for restoration. - 2) Communication tubes. - 3) Electroscope. - 4) Vertical galvanometer. - 5) Leyden jar.See Sold Price
SoldLot Electro-Physical Demonstration Models, c. 1920Elektrophysikalische Demonstrationsmittel, um 1920 1) Spiegel-Galvanometer, Hersteller: "W. Schweder, Kiel". - 2) Präzisions-Wattmeter mit Widerstandsbrücke "Siemens & Halske". - 3) Kleine InfluenzmSee Sold Price
Sold2 physical Demonstration Models, c. 19202 physical Demonstration Models, c. 1920 1) Spherical mirror, convex, on wooden stand, moveable, 12 ½ in. high. – And: 2) Rotating coil, 180° swingable, manufacturer: "Dr. Erich Huth, Berlin", 10See Sold Price
SoldGroup of Electrostatic Demonstration Models, c. 1920Group of Electrostatic Demonstration Models, c. 1920 1) Leyden jar, height 9 ½ in. – 2) "Der elektrische Mörser" (electric mortar) for elderberry ball experiments. – 3) 2 lightning plates. –See Sold Price
Sold"Neon Lamps" Physical-Demonstration Model, c. 1920Neon Lamps Physical-Demonstration Model, c. 1920 French teaching model, with 8 individually-operated neon bulbs, on wooden base, 15 ¾ in. wide. Physikalisches Demonstrationsmodell "Glimmlampen", um 1See Sold Price
Car Chassis Demonstration Model by Welch, c. 1920Car Chassis Demonstration Model by Welch, c. 1920 W.M. Welch Scientific Company, Chicago, USA. For demonstrating steering, clutch, transmission, differential and brake, crank-drive, on wood base, dimeSee Sold Price
SoldPhysical-Demonstration Model Crookes' Tube, c. 1920Physical-Demonstration Model Crookes' Tube, c. 1920 With anode, cathode and platinum plate on wooden stand, overall height 15 2/5 in., working. Crookes'sche Glühröhre, um 1920 Physikalisches DemonstSee Sold Price
SoldAerostatical Demonstration Model "Air Pump", c. 1Aerostatical Demonstration Model "Air Pump", c. 1920 Brass on wooden base, length of the pump 15 in., with glass dome, 12 1/4 in. high. Deutsche Beschreibung: Kolben-Luftpumpe, um 1920 AerostatischesSee Sold Price
Sold2 Technical Automobile Demonstration Models by Welch,2 Technical Automobile Demonstration Models by Welch, c. 1920 W.M. Welch, Scientific Company, Chicago, USA. Cast iron and steel, on wood bases. 1) Steering, size 9 ½ x 7 in. - And: 2) Differential,See Sold Price
SoldDemonstration Model Single Coil Motor, c. 1920Demonstration Model Single Coil Motor, c. 1920 For physics lessons, unmarked, on wooden base, size: 9 x 6 3/4 x 5 1/2 in. Deutsche Beschreibung: Demonstrationsmodell Einzelspulen-Motor, um 1920 Für dSee Sold Price
SoldLarge High-Voltage Apparatus According to Tesla, c.Large High-Voltage Apparatus According to Tesla, c. 1920 Demonstration model, used in physics for high-frequency and voltage alternating-current experiments, manufactured by Boh. Zukriegel, Prague, wiSee Sold Price
SoldLarge Hot-Air Motor with Transmission, c. 1920Large Hot-Air Motor with Transmission, c. 1920 Physical demonstration model, cast metal and nickeled brass, on wood base, working and reciprocating cylinders arranged side by side, overall size 15 x 7See Sold Price
SoldModel of a Micro-Telephone Station by Max Kohl, c. 1920Model of a Micro-Telephone Station by Max Kohl, c. 1920 Physical demonstration model. Open microphone on polished baseplate, fitted to two pillars and rotating about a horizontal axis. The board is fiSee Sold Price
Sold1-Cylinder Steam Engine, c. 19201-Cylinder Steam Engine, c. 1920 Precision demonstration model, cylinder Ø 1 1/3 in., flywheel Ø 5 2/3 in., on wooden base, 10 5/8 x 7 in. Einzylinder-Dampfmaschine, um 1920 PräzisionsdemonstrationSee Sold Price
SoldGeissler Fluorescent Tube, c. 1920Geissler Fluorescent Tube, c. 1920 Physical-demonstration model, with 2 fluorescent liquids, on wooden stand, overall height 15 in., working. Geissler'sche Fluoreszenzröhre, um 1920 Physikalisches DeSee Sold Price
SoldInduction Coil with Geissler Tube, c. 1920Induction Coil with Geissler Tube, c. 1920 Physical demonstration model, unmarked, size 7 1/2 x 4 x 5 1/2 in., works with 9 V battery. - Very good condition! Funkeninduktor mit Geißler'scher Röhre,See Sold Price
Sold2 Electric Motors, c. 19202 Electric Motors, c. 1920 Physical demonstration models. 1) Motor for direct, alternating and three-phase current, manufactured by "Physikalische Werkstätten, Göttingen", also useable as converter.See Sold Price
Sold3 Teaching Precision Volt- and Ampermeters, c. 19203 Teaching Precision Volt- and Ampermeters, c. 1920 Large demonstration models in wood cases. 1) Max Kohl, Chemnitz. Height 13 1/3 in. - 2) Griffin & Tatlock, Manchester. Height 17 1/3 in. - And: 3)See Sold Price
TOKHIEM MODEL #211 TEN GALLON VISIBLE GAS PUMP RESTORED IN YELLOW & BLACK.Dan Morphy Auctions4.2(1.3k)See Sold PriceFeb 24, 2024
BOWSER MODEL #C 81 H "SQUARE VISIBLE" GAS PUMP.Dan Morphy Auctions4.2(1.3k)See Sold PriceFeb 24, 2024
ST LOUIS MODEL #409 TEN GALLON VISIBLE GAS PUMP.Dan Morphy Auctions4.2(1.3k)See Sold PriceFeb 24, 2024
RESTORED TOKHIEM MODEL #101 "PERFECTION VISIBLE" TEN GALLON GAS PUMP.Dan Morphy Auctions4.2(1.3k)See Sold PriceFeb 24, 2024
GILBERT & BARKER MODEL #65 GAS PUMP RESTORED IN SOCONY GASOLINE.Dan Morphy Auctions4.2(1.3k)See Sold PriceFeb 24, 2024
TOKHIEM MODEL #201 TEN GALLON VISIBLE GAS PUMP W/ ACCESS DOOR.Dan Morphy Auctions4.2(1.3k)See Sold PriceFeb 24, 2024
GILBERT & BARKER MODEL #176 TEN GALLON VISIBLE GAS PUMP.Dan Morphy Auctions4.2(1.3k)See Sold PriceFeb 24, 2024
MARTIN & SCHWARTZ MODEL #19 CLOCK FACE GAS PUMP.Dan Morphy Auctions4.2(1.3k)See Sold PriceFeb 24, 2024
Black Duck Decoy by Clark Madera (1883-1953)Copley Fine Art Auctions4.5(40)See Sold PriceFeb 24, 2024
Preening Mallard Hen Decoy by Walter "Tube" Dawson (1882-1955)Copley Fine Art Auctions4.5(40)See Sold PriceFeb 24, 2024
c1920 American Gorham Sterling Silver Postal ScaleHeritage Gallery Auctions4.4(56)See Sold PriceMar 10, 2024
Indian Red Cotton Dupatta with Printed Silver Pigment, C. 1920Material Culture4.6(769)See Sold PriceFeb 29, 2024
Antique Indian Mizo Chin Striped Mantle, Mizoram, C. 1920Material Culture4.6(769)See Sold PriceFeb 29, 2024
ANTIQUE FRENCH FAURE MARTY LIMOGES ENAMEL VASE C 1920Antique Arena Inc.4.5(866)See Sold PriceMar 02, 2024
Edison Oak Standard Model C Cylinder Record PlayerIroquois Auctions4.2(130)See Sold PriceApr 20, 2024
Bose Acoustic Wave Model CD 3000William Bunch Auctions & Appraisals4.6(878)See Sold PriceFeb 27, 2024
