Very Rare WWII Enigma Cipher Machine. This highly important three-rotor Enigma deciphering machine was used by the Nazis during World War II. It is believed that acquisition of an Enigma, and the subsequent deciphering of the German codes by the Allies, shortened the war in Europe by at least two years. Examples of Enigma machines are exceptionally rare and almost all known models are in museums.
The Enigma Machine, used by the Germans to encrypt and decrypt all sorts of messages during World War Two. With millions of possible rotor combinations, the Germans were convinced their codes would never be broken. However, the combined Anglo-American team of code breakers at Bletchley Park, along with the help of the world's first computer (called "Colussus"), eventually cracked it and were reading German message traffic in near-real time.