Rare Nazi cipher-machine that replaced Enigma sold at auction to mystery collector


A rare surviving example of a Second World War cipher-machine developed by Nazi Germany after British forces broke the Enigma code has been sold at auction for €98,000 (£87,000).

The SG-41 cipher-machine , known during the war as a “Hitler-Mill”, was bought by an Irish private collector who wished to remain anonymous, according to the Hermann Historica auction house in  Munich.

The SG-41 was developed by Nazi engineers after British codebreakers at Bletchley Park succeeded in breaking the Enigma code in 1941.

It was much more sophisticated algorithms than the Enigma device, and Allied forces never succeeded in breaking its codes.

It used six encoding wheels instead of the Enigma machine’s three, and they were able to rotate in either direction.


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