In September 1939, Nazi officials approved a highly classified plan to forge British currency on a massive scale. The initiative eventually moved to Sachsenhausen concentration camp, where SS Major Bernhard Kruger assembled a team of Jewish prisoners with backgrounds in printing, banking, and art. Operating in total secrecy within isolated barracks, these men were forced to mass-produce nearly flawless five-pound notes. They replicated the pure rag paper, reverse-engineered the alphanumeric serial codes, and meticulously aged the bills by hand to bypass Bank of England security measures.
The counterfeit money soon entered global circulation through a vast smuggling network, successfully purchasing weapons, intelligence, and the rescue of Benito Mussolini. Estimates suggest the factory produced hundreds of millions of pounds, enough that the Bank of England was ultimately forced to redesign its currency. While the operation’s scale remains staggering, the survival of the forgers hung on a fragile balance. Their technical perfection kept them alive long enough to be saved by a bureaucratic loophole just days before the end of the war.
