Trirain t1_ir9q01e wrote

one of the marks was that according the habit of the time the banknotes were pinned together to look authentic but either the prisoners working in the printing press or unaware spies put the pin in the place no Briton would put - through the face of the monarch or the coat of arms, I'm not sure now.

The other reason was that the prisoners actively sabotaged the printing, making little mistakes.


There is a movie about prisoners who worked in the printing press made from a book which was written by an actual prisoner who survived it.