Marconi's Coherer Receiver, by Guglielmo Marconi, England, 1896
Inventory Number: 86390
Maker Details: Made by Guglielmo Marconi.
Inscription: "SIEMENS BROS. & CO. / LONDON No 12797" printed on interior surface of telegraph relay.
Size: 290 x 290 x 260 mm (box)
Materials: Steel, teak, brass, glass, mahogany?, ivory, assorted metals.
Other Given Number(s): Christie's 3, 889 (white tag), eD 20 (orange tag).
Marconi's Coherer Receiver, in japanned steel black box. With electric bell, and connected circuit in teak case (with removable cover) mounted on upper exterior surface of box. With coherer/tapper unit, six Obach's Patent batteries in series, and a Siemens telegraph relay that operated the electric bell on top of the box, within box. Siemens telegraph relay consists of lacquered brass cylinder with glazed top, mounted on a circular teak base. Coherer/tapper is mounted on rectangular mahogany? base. Batteries are connected together in a rectangular japanned steel black box. Coherer/tapper, relay and batteries are all mounted on teak panel that slides out of box.