Bell Telephone Demonstration Model, c. 1900

Bell 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 condit

German Wall-mounted Model M 1900 Telephone, c. 1900 Walnut case, Berliner-type carbon microphone with speaking horn, 3-part crank inductor, 2 spoon-shaped earphones by Schuchhardt, double bell. Deutsc

2 Intercom Telephones and Switch by L.M. Ericsson, c. 1900 1) Battery ringing telephone, model BC 1100, polished walnut base, single bell, push button ringing, carbon grain microphone with speaking ho

Group 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 acid

4 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:

2 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 1900

Miniature Telegraph and 2 Bell-Type Telephone Receivers, c. 1900 1) Morse telegraph receiver by Cattaneo Angelo, Meccanica, Milan, spring motor, on wood base, 7 4/5 x 4 ¾ in. - 2) Morse key by th

Ampère 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 i

Electromagnetic 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 Physikalisches

French Wall Telephone, c. 1900 Model "Trèfle" (shamrock), made by "Société Industrielle des Téléphones", no. 8066, based on G. Bailleux system, fixed speaking horn, 2 handsets, speaking button, b

2 Early Telephony Wall Plates, c. 1900 With Bell telephones, hand-painted terracotta figures of a gossiping couple, wood plates with wall mounts, Ø 16 ½ in. Very amusing display items.

Demonstration Model of an Early Carbon Grain Microphone, c. 1900 With series resistor and switch, wood base stamped with no. 188937. Demonstrationsmodell eines frühen Kohle-körnermikrophons,

Early Wall Telephone, c. 1900 Maker not known, probably Sweden, walnut case, writing slope with glass insert, handset with speaking horn, three-part crank-inductor, double bell, lightning protection,

Accurate Replica of Alexander Graham Bell's Telephone An excellent reproduction of this historic telephone, 7 x 3 ¾ x 6 in. - A very interesting and instructive demonstration model. Erstes Teleph

Accurate Replica of Alexander Graham Bell's Telephone An excellent reproduction of this historic telephone, 7 x 3 ¾ x 6 in. - A very interesting and instructive demonstration model. Erstes Teleph

Intercom Telephones, c. 1900 onwards 1) Probably England, oak case, 4-part crank inductor, double bell, handset with hygienic microphone. - 2) L.M. Ericsson. Metal case, rotary switch for thirty conne

6 Intercom Telephones, c. 1900 onwards 1) L.M. Ericsson, with bell, handset with speaking horn. - 2) 3 Emgephon telephones, 2 with bells, one incomplete. - 3) Unmarked, wood case. - And: 4) La Teleph

L.M. Ericsson Model AB 120 Wall Telephone, c. 1900 No. 2172459, L.M. Ericsson, Stockholm, Sweden. Walnut case, attractive Ericsson transfer, writing slope, handset with speaking horn, 2-part crank ind

2 Early English Intercom Telephones, c. 1900 1) Table model, with speaking horn, damage to the earpiece, walnut base, marked "Sterling Telephone & Electric Co.". - And: 2) Wall model, speaking horn,

Bavarian Wall Telephone by Wetzer, c. 1900 Hermann Wetzer, Pfronten. No. 1180, walnut case M 1899, carbon microphone by Friedrich Reiner in Munich, 3-part crank inductor, 2 Bell-type earphones. Bayeri

Bavarian Wall Telephone by Heller, c. 1900 Friedrich Heller, Nuremberg. Walnut case, carbon pencils transmitter under wood membrane, 3-part crank inductor, double bell, 2 bakelite earphones, marked: "

Bavarian Wall Telephone by Heller, c. 1900 Friedrich Heller, Nuremberg. No. 9572, walnut case, height-adjustable carbon microphone by Friedrich Reiner in Munich, 3-part crank inductor, 2 Bell-type ear

Bavarian Wall Telephone by Zettler, c. 1900 Alois Zettler, Munich. No. 5308, walnut case, height-adjustable carbon microphone by Friedrich Reiner in Munich, 3-part crank inductor, Bell-type earphone,

Wall Telephone by Berliner, c. 1900 J. Berliner, Hanover. Walnut case, 3-part crank inductor, Berliner Universal Transmitter Microphone, spoon-shaped telephone receiver, double alarm bell, with key. F