Marconi-Reisz Carbon Granulate Microphone, c. 1925

Marconi-Reisz Carbon Granulate Microphone, c. 1925 Designed by Reisz in Germany and manufactured by Marconi's Wireless Telegraph Co. Ltd, London, consisting of octagonal marble block, carbon granules

3 Early Microphones 1) Carbon rod microphone, c. 1895, no. 6101, probably by Friedrich Reiner, Munich, with wood membrane, walnut case. - 2) Carbon granulate microphone, c. 1895, unmarked, speaking ho

Reisz Model M115 Microphone, c. 1933 Paul Krüger Elektro-Akustische Apparate, Berlin. No. 8588, carbon microphone, spring suspension, marble base. Reisz-Mikrophon Modell M115, um 1933 Paul Krüger

Reisz Type 104 "Marble Block" Microphone, c. 1923 Eugen Reisz, Apparatebau, Berlin. No. 3197, 250-ohm cross-current carbon microphone, diaphragm area 38 cm², the standard microphone of German Bro

Wall Telephone with Carbon Pencil Microphone, c. 1885 Unmarked, walnut case, Hughes-type carbon pencil microphone with wood membrane, 2 earphones, single bell. Restored. Fernsprech-Wandapparat mit Koh

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,

4 Carbon Table Microphones, c. 1930 1) Tesla Public Reporter. - 2) Dralowid Reporter. - 3) Ronette. - And: 4) VDFI for Telefunken. - In addition: India-Ton (part). 4 Karbon-Tischmikrophone, um 1930

3 Early Microphones 1) Carbon bar microphone, 1889 onwards, no. 830, Mix & Genest, Berlin, with wood membrane. - 2) Carbon disk microphone, c. 1895, R. Stock & Co., Berlin, brass case. - And: 3) Berli

2 Microphones on Stands 1) Philips Type 4043 carbon microphone, no. 1462, c. 1932, octagonal metal housing, spring-mounted on stand no. 4063. - And: 2) Cosmophone microphone BMF2020, c. 1934, Braun, F

Microphone on Stand by Philips, c. 1940 Philips carbon microphone capsule no. 4225, with ceramic body in sprung suspension, on bakelite stand no. 4247, total height 16 ¾ in. Mikrophon auf St&#228

Wall Telephone with Hughes-Type Microphone, c. 1890 Germany, unmarked, carbon pencil transmitter under wood membrane, single bell, 2 bakelite bullring receivers. Very rare. Wandtelephon mit Mikrophon

2 Telephone Microphones and 1 Receiver 1) Universal Transmitter, J. Berliner, Hanover/Vienna, c. 1893, carbon grain microphone with carbon disc diaphragm, original lacquered papier-mâché hor

Early Wall Telephone by L.M. Ericsson, c. 1890 Stockholm, model 301, fixed carbon microphone, Bell-type handset, 3-part crankinductor, double bell, lightning protection, ornate walnut case, writing de

Siemens & Halske Patent Telephone, c. 1910 No. 278216, polished walnut case, carbon microphone with speaking horn, adjustable receiver by Siemens & Halske, large three-part crank inductor. Patent-Tele

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

Early Wall Telephone by L.M. Ericsson, c. 1890 Stockholm, model 325, fixed carbon microphone, Bell-type handset, 3-part induction coil, double bell, lightning protection, ornate walnut case, writing d

Early Wall Telephone by L.M. Ericsson, c. 1890 Stockholm, model 301 (new no. AB 210), fixed carbon microphone no. 570 on arm, Bell-type handset, 3-part induction coil, double bell, lightning protectio

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

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,

SA25 "Cow Hoof" Table Telephone, c. 1925 Manufactured by Merk Telefonbau. Metal case, dial, handset with hygiene microphone. This telephone was only in service in Bavaria. Tischfernsprecher SA25 "Kuhf

Early Wall Telephone by L.M. Ericsson, c. 1890 Stockholm, model 301, fixed carbon microphone no. 570, Bell-type handset, three-part induction coil (missing one section), double bell, lightning protect

2 Mix & Genest Wall Telephones, c. 1925 Intercom and dial telephone, metal cases, horn-type microphones. 2 Wandtelephone Mix & Genest, um 1925 Linienwähler und Wählscheibentelephon, jeweils Metallge

2 German Wall Phones 1) Siemens & Halske, Berlin, simplified design telephone station, c. 1896, no. 92028, carbon bag microphone, large can receiver, two-part crank inductor, double bell, polished wal