During WWII "almost perfect" forgeries of Bank of England Pound notes were
produced by prisoners in a German concentration camp. The project was code named
"Operation Bernhard". The German intent was to ruin the British economy by flooding
them with hundreds of millions of counterfeit pounds.
There are a number of very small but discernible differences between the
Operation Bernhard counterfeits and genuine notes. A counterfeit has a dull look
in Britannia eyes, her lower lip not as full, less clarity on the cross at top of
her crown, fleur-de-lis on the crown not as well defined, and the marking on the
vase and the shadow around it not as dark. See
enlarged Britannia. Genuine one is on the left. Can you find other differences?