British Pound Hollow Spy Coin with Microfilm US Flag Containing Hidden Text

Hollow British One Pound coin has a specially designed "cavity" or "well" that is exposed when you open the coin. It contains an ultra-high resolution film showing an American flag. The flags red stripes (gray on the film), are actually comprised of text from a story about the famous cold war era spies Julius & Ethyl Rosenberg. There are more than 13,000 characters.