Morse Key, by Marconi Company, England, c. 1900
Inventory Number: 86892
Date: c. 1900
Maker Details: Signed by Marconi's Wireless Telegraph Co. Ltd.
Inscription: "MARCONI'S WIRELESS TELEGRAPH CO LTD / 50" etched into front side of base. "S.W.A." etched into rear side of base.
Size: 160 x 110 x 120 mm (including tapper)
Materials: Brass, ebonite, mahagony.
Other Given Number(s): Christie's 23, Science Museum Loan 1924-507.