
Jon Baddeley
Specialist Consultant Collectors, Science & Marine
Sold for £1,275 inc. premium
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The M-209-B was designed by the Swedish cryptographer Boris Hagelin, and produced by the New York-based manufacturers Smith & Corona. The machine was used by the United States armed forces throughout World War II and saw continued service during the Korean War. Entering text was a manual process performed by setting the alphabet ring to the desired letter, then turning the right-hand knob one full rotation, repeating for each individual letter. This laborious process was offset by the machine's compact size and it not requiring any electricity to operate, which provided greater portability compared to the German Enigma machines.