Ericsson Ink-Writer Telegraph, c. 1895L.M. Ericsson & Co., Stockholm. Serial no. 2584, original lacquered brass, spring motor (working), 3 glazed ...

Official French "Agence Havas, Paris" Stock-Market Teleprinter, c. 1920Invented by "Wright et Nigron" and manufactured by "Sté des Magnétos 'RB' C...

French Dial Telegraph Set by Bréguet and Vinay, c. 1855Original sender and receiver device as patented in 1849. Transmitter by L. Bréguet, serial ...

Malakoff Ink-Writer Telegraph, c. 1880Doignon Malakoff, Seine, France. Serial no. 18489, original lacquered brass, spring motor (working), on poli...

Breguet Ink-Writer Telegraph, c. 1895Maison à Breguet, Paris. Serial no. 10592, original lacquered brass, spring motor (missing key, untested), on...

Toy Morse Telegraph, c. 1920Instrumentsfabriken "Fysik", Erik Weitzmann, Millerød, København, Denmark. Ink writer, brass, spring-driven (working),...

WWII US Army Emerson RBZ Receiver Type CEX-10172, c. 1942Consisting of receiver, power pack and "Skull cap" earphone, in canvas bag. - In addition...

Little Polish Spy Radio Transceiver AP-5, c. 1944By Tadeusz Heftman of the Polish Military Wireless Unit. Transmitter and receiver, frequency rang...

Telegraph and Telephone Accessories, c. 1880-19001) 5 Morse keys, 1 x Maison Breguet, 1 x M. Provin and 3 x unmarked, each on a wooden base. - 2) ...

Little Polish Spy Radio Transceiver BP-5, c. 1944By Tadeusz Heftman of the Polish Military Wireless Unit. Transmitter and receiver, frequency rang...

American SSTR-1 Clandestine Radio Set, c. 1942Manufacturer: RCA, with improvements by Radio Development & Research Corporation. Consisting of: rec...

Electro-Mechanical Burst Encoder MX-4498/GRA-71, c. 1957Arvin Industries, USA. Device for pre-recorded coded messages to be broadcasted in Morse c...

MK XV Transmitter with Associated Receiver, c. 1938British clandestine set. Transmitter, serial no. 5558, with 2 valves (6F6 and 6L6 PA), frequenc...

Spy Radio Set AN/GRC-109, c. 1950Admiral Corporation, USA. Consists of 3 units: receiver R-1004/GRC-109, 6 tubes, only shortwave, transmitter T-78...

French Brass Morse Telegraph by Digney, c. 1880Digney Frères & Cie. Serial no. 6250, ink-writer, original lacquered brass, spring motor (working),...

Swedish Military Receiver MT-910 B, c. 1965Model Lufor Radio Mottagare MT-910 B, manufacturer: SRA Svenska Radioaktiebolaget. Long wave and medium...

Whaddon Mk VII - Paraset Clandestine Radio, c. 1942No. 10547, a British transceiver developed for resistance groups in Europe, second metal "cash ...

2 Rohde & Schwarz Radio Technical Laboratory Devices, c. 1966Physikalisch-Technisches Entwicklungslabor Dr. Rohde & Dr. Schwarz. 1) Power signal g...

British Army Rucksack Transceiver, c. 1940Transmitter and receiver separated into two units, with Morse key, earphones and battery container, in c...

Telefunken PE 484/3 Miniature Direction Finder, c. 1958Telefunken, Germany. Used for direction finding of agents and clandestine radio stations, v...

Transmitting Tubes (Triodes) and Further Electronic Tubes1) Telefunken RS 288, transmitting pentode, filament intact, c. 1938. - 2) Telefunken RS ...

Wehrmacht Voltage-Regulator Tubes, c. 1940STV 150/250 - WF S1,5/40dv - STV 280/40Z - Osram Eisen-Urdox EU VI - Osram LN26698 with Edison base - WF...

Group of Electroluminescent and other Crystals, c. 194029 tubes for Wehrmacht radio equipment: illuminated quartz, oscillating quartz, double quar...

6 Large German Transmitting Tubes1) Telefunken RS 329, air-cooled 1-kW transmission triode. - 2) Siemens GR I, air-cooled 1-kW transmission triode...

6 Telefunken Transmitting Tubes (Triodes)1) RS 5 CII, no. 77070, with test card, 1919. - 2) RS 31 XII, no. 203055/1241, Navy (Kriegsmarine), c. 19...

8 Telefunken Transmitting Tubes (Triodes)1) RS 291 VII, no. 12347/106, R.L.M. property (Reich Aviation Ministry), 1936. - 2) RS 31 XII, no. 203771...

13 Transmitting Tubes1) Funkwerk Erfurt VRS 320, former Telefunken RV 271B, triode, very rare. - 2) Telefunken RS 291VII, reverse labeled "R.L.M. ...

8 Transmitting Tubes (Triodes)1) Telefunken RS 285, no. 101439/0142/I, Navy, used in Lorenz ground radar, 1938 onwards. - 2) Telefunken RS 285 J, ...

Clandestine Receiver Mark 301, c. 1954Miniature valve-based receiver, designed by SG Hart at Her Majesty's Government Communications Centre (HMGCC...

Nuremberg Sundial by Stockert, Late 18th CenturyStockert a Bavaria. Paper on wood, string gnomon, inset compass, rear side with list of latitudes ...

Electrical Telewriting Machine by Jules Richard, Paris, c. 1890Early French device, for recording meteorological data such as pressure, vacuum or ...

Russian Brass Pocket Equinoctial Sundial, c. 1880Inset dial compass under glass, hour ring with Roman numerals, silvered scales, folding gnomon, Ø...

Induction Coils, Leyden Jars and Light Bulbs1) Miniature induction coil, coil length only 2 ¼ in., with spark gap, on mahogany base, 3 ¼ x 2 ¼ in....

Electrostatic Experiment Devices, c. 19201) 3 dischargers with ebonite handles, one with hinge. - 2) 7 conductors on glass pillars, two of them ac...

Hughes Induction Balance, 1879Laboratory instrument, made by W. Groves, London. With inscription on brass plaque "Given to Heath Grammar School fr...

Tellurium and Lunarium by Jan Felkl, Prague, c. 1880Physical demonstration model, signed on the earth globe: "Die Erde, Prag bei J. Felkl, No. 1",...

3 Compasses1) Paperweight, glass, Ø 3 1/6 in., weight 350 g, c. 1920-30. - 2) Lighter, nickeled, c. 1935. - And: 3) Sundial with compass, painted ...

Döbereiner's Lamp, c. 1860Lighter invented by Johann Wolfgang Döbereiner, cylindrical porcelain jar with lid, brand mark SPM and Prussian eagle, f...

Italian Artillery Gun Range Finder, c. 1914Marked "Ottica Mecc. G. Passerini, Milano" and "R. Esercito". With 4¾-inch telescope, magnetic compass ...

5 Physical Demonstration Instruments, c. 19201) High-voltage transformer according to Elster and Geitel, made by Max Kohl, Chemnitz, Germany. On w...

Very Large Bonetti-Type Influence Machine, c. 1910Electrostatic generator, manufactured by Roycourt, successeur de L. Bonetti, Paris. Polished wal...

5 Crookes Electronic Tubes, c. 19201) Maltese cross tube with forward-tipping cross, length 6 ¼ in., on stand. - 2) Cathode ray deflection tube, u...

5 Physical Demonstration Instruments, c. 19201) Crookes tube, with aluminum anode in butterfly form, coated with a fluorescent material, with glas...

4 Large Physical Demonstration Instruments, c. 19201) "Maltese Cross", cathode ray tube with aluminum cross inside the tube, designed to flip down...

4 Large Physical Demonstration Instruments, c. 19201) "Maltese Cross", cathode ray tube with aluminum cross inside the tube, designed to flip down...

2 Large Physical Demonstration Instruments, c. 18801) "Electrical Egg", for the demonstration of an electrical discharge between two electrodes in...

Large Crookes Fluorescent Tube, c. 1910Gas discharge tube with cathode, anode and a bouquet of fluorescent flowers. Overall height: 18 in.! - Extr...

Large Crookes Fluorescent Tube and Radiometer, c. 1910Gas discharge tube with cathode, anode and a fluorescent windmill with turning sails. Overal...

Large Geissler Tube with Uranium Glass Flower, c. 1915Cold cathode gas discharge tube, lower part filled with colored fluid, on turned wooden base...

4 Large Physical Demonstration Instruments, c. 19201) "Maltese Cross", cathode ray tube with aluminum cross inside the tube, designed to flip down...

Tellurium and Lunarium by Jan Felkl, Prague, c. 1880Physical demonstration model, signed on the earth globe: "Zemekoule Vydalo J. Felkl a syn Rozt...

Japanese Mariner's Compass, c. 1850Magnetic compass, hardwood case, Ø 4 ¾ in., upper face with characters of the 12-sign cycle, with lid.Zustand: ...

Complete Apparatus for Experiments with High Currents according to Tesla, c. 1910With maker's plaques "Franz Steflitschek - Mechaniker - Wien VI. ...

Physical Demonstration Models, c. 19001) Henley discharger, lacquered brass, 2 glass columns, mahogany base, with inscription "Ecole de Pharmacie ...

Very Large Wimshurst's Electrostatic Machine, c. 1920Manufacturer: H. Heustreu, Werkstätten, Precisions mechaniken & Optik, Kiel. A pair of contra...

Electrotechnical Laboratory Devices and Accessories1) Power-supply unit for voltages up to 260 volts DC. - 2) Grundig/Hartmann & Braun, converted ...

Very Large Holtz-Type Influence Machine, c. 1880Electrostatic generator, manufactured by E. Ducretet, Paris. Polished walnut frame, glass columns,...

Group of Scientific InstrumentsPhysical demonstration models and others: 5 various Crookes cathode ray tubes, 1 x-ray tube (defective), 15 glass v...

Electric-Powered Mercury Interrupter, c. 1920Manufactured by Watson, London. For operation of high-potential coils, with 2 or 4 interruptions per ...

5 Physical Demonstration Instruments, c. 19201) "Mammoth" X-ray air-cooling tube with regeneration device, made by Cuthbert Andrews, England, leng...