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Marconiphone Two-Valve Receiver Type 21, by Marconiphone Company, London, 1925

Inventory Number: 18847

18847-4t 18847-1at 18847-3t 18847-1t 18847-2t 18847-1bt

Date: 1925

Maker Details: Signed by Marconiphone Co. Ltd.

Inscription: "...MARCONI'S WIRELESS TELEGRAPH CO. LTD. ..." printed on metal plaque at rear of interior. See Documents for other inscriptions.

Size: 320 x 215 x 205 mm (lid closed)

Materials: Bakelite?, ebonite, glass, brass, mahogany, plastic?

Other Given Number(s): Christie's 84.


Marconiphone Two-receiver'>Valve Receiver Type 21, with valves (OFF/ON), inductance (scale 0-20) and reaction (scale 0-10) tuning dials, and four assorted dials on ebonite front panel in polished mahogany case. Assorted dials consist of two pairs: "A" and "E", and "+" and "-" "PHONES" dials. Lid lifts to reveal interior including a "LOTUS INTERVALVE L.F. TRANSFORM", two valves, tuning device, assorted dials, "MARCONIPHONE VARIABLE RESISTANT (PAT. NO. 210670)", and assorted electronic components. Assorted coloured wires protrude from lower rear section. With BBC logo and "G. Marconi" signature transfers on reverse and obverse of lid respectively. BBC logo ("ENTIRELY BRITISH MANUFACTURE") was used between September 1924 and 1927.

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