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Instruments of Science & Technology / A NEMA TD 626 CIPHER MACHINE, SWISS MID-20TH CENTURY,

Lot 12
A NEMA TD 626 CIPHER MACHINE,
SWISS MID-20TH CENTURY,
28 September 2022, 14:00 BST
London, Knightsbridge

Sold for £7,012.50 inc. premium

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A NEMA TD 626 CIPHER MACHINE, SWISS MID-20TH CENTURY,

maker's plate numbered TD 626, the 10-wheel cipher machine used by the Swiss Army and Diplomatic Corp, complete with standard keyboard, corresponding light-up displays, remote display, wiring, in painted metal case, stencilled TD 626,
the machine 11 1/2 in (29cm) wide
12 3/4in x 5 3/4in x 14 1/2in (32.5cm x 14.5cm x 37cm) overall

Footnotes

First deployed in 1947, the NEMA cipher machine shared numerous features with the commercial Enigma, including the lack of a plugboard. In contrast, the NEMA utilised 5 rotors for enciphering the alphabet, and an additional 5 paired rotors which give irregular stepping of the rotors. This configuration resolved a major vulnerability of the odometer-style stepping of the Enigma machine. The present machine is understood to have once been kept in war-reserve storage in the event of conflict.

Additional information