Enigma M4 Rare Nazi encryption machine auctioned for record sum

Carlotta Henggeler

22.11.2025

The Nazi encryption machine Enigma M4 fetched a large sum at an auction. The model of the encryption machine in the picture is on display at the Museum of the Second World War in Seattle.
The Nazi encryption machine Enigma M4 fetched a large sum at an auction. The model of the encryption machine in the picture is on display at the Museum of the Second World War in Seattle.
IMAGO/Dreamstime

A fully functional "Enigma M4" from the Nazi era was auctioned off in Paris for 482,600 euros - a new record price.

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  • A functional "Enigma M4" from the Nazi era was sold in Paris for 482,600 euros - the highest price ever paid for this model.
  • The machine from a French private collection went to an unknown buyer, significantly beating the previous record set in 2015.
  • The "Enigma" was considered a technical masterpiece until British crypto experts cracked its code.

A rare and fully functional "Enigma M4" from the Nazi era has gone under the hammer in Paris for 482,600 euros - the highest price ever paid for this model.

The encryption machine comes from a private collection and was previously owned by a French collector.

An unknown buyer secured the historic piece, which was last auctioned in New York in 2015 for significantly less.

Used by the Nazis to encrypt messages - cracked by a British man

The "Enigma" machine was developed in the 1920s for military encryption and was considered a technical masterpiece due to its billions of possible combinations.

During the Second World War, German troops used the machine to encrypt their communications - until British crypto experts led by Alan Turing deciphered the code, which was later considered a decisive contribution to the outcome of the war.

The British mathematicians' contribution remained secret for decades and only became public knowledge in the 1990s. Their story was made into a movie, including "The Imitation Game" with Benedict Cumberbatch.

A comparable model of the "Enigma M4" achieved a then record price of 365,000 US dollars in New York in 2015.