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Gray Magnetic Relay Key, by Marconi Company, London, c. 1910

Inventory Number: 56506

56506-2t 56506-1t

Date: c. 1910

Maker Details: Signed by Marconi's Wireless Telegraph Co. Ltd.

Inscription: "MARCONI'S WIRELESS / TELEGRAPH CO. LTD. LONDON / NO 390980 TYPE" on silvered metal plaque at front of device

Size: 190 x 160 x 40 mm (plinth height)

Materials: Teak, iron?, ebonite? wood, metal alloy, silver.

Other Given Number(s): Christie's 42.


Gray Magnetic Relay Key, with condensor, fuse, key, alternator and transformer metal alloy terminals on teak plinth, with slivered metal company plaque. A relay key was used to reduce the burning of the contacts on the Morse key.

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