This photograph shows an Enigma M4 rotor key machine used for encrypted communication during World War II, ahead of its' auction exhibited at the Christie's auction house in Paris on November 13, 2025. The Enigma M4 machine will be auctionned on November 18, 2025 at the Christie's auction house in Paris. (Photo by BERTRAND GUAY / AFP) (Photo by BERTRAND GUAY/AFP via Getty Images)