A 4-rotor, 1944 German Enigma machine. Bonhams. Equipped with a standard qwertz keyboard, these machines represented an exceptionally larger combination of codes than possible in a 3-rotor model.

The M4 Enigma machine, circa 1943 and made for German U-boat use, ... the M4 unit made in Berlin by Heimsoeth and Rinke is a German Naval 4-rotor Enigma enciphering machine.

An exceptionally rare and fully-functional Nazi Enigma M4 enciphering machine used during the Second World War has sold for a whopping $365,000, setting a new world record at auction.

A rare 1944 four-rotor M4 Enigma cipher machine, considered one of the hardest challenges for the Allies to decrypt, has sold at a Christie's auction for £347,250 ($437,955).

An extremely rare German four-rotor M4 Enigma cipher machine used by the German U-boat forces in the Second World War has set a new world auction record at a Christie's sale at Rockefeller Center ...

More than 60 years after the end of World War II, a distributed computing project has managed to crack a previously uncracked message that was encrypted using the Enigma machine. The M4 Project ...

Used during WWII to encrypt messages, the Enigma Machine has a fascinating history and unique workings. This animation delves into its mechanisms and significance. Further topics explored include ...

An Enigma machine is any of a family of related electro-mechanical rotor cipher machines used for the encryption and decryption of secret messages. Enigma was invented by the German engineer ...

WHAT: The international community of scientific machine collectors went all agog last December when Bonhams New York realized $463,500 for an intact M4 World War II Enigma machine. The result was ...