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1. Disguised as ordinary currency, spy coins played an essential role in espionage activities throughout history.
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2. Hollow coins, such as the British Sovereign used by British intelligence during WWII, concealed microfilm and secret messages.
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3. East German spy coins ingeniously hidden tiny transmitters, allowing agents to track movements and gather intelligence discreetly.
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4. KGB utilized Soviet "spy" coins equipped with hidden compartments to conceal microfilm, a covert method for transmitting confidential information.
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5. American silver dollar coins, known as "bugging coins," contained tiny listening devices used by CIA agents to eavesdrop on conversations.
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6. In the 1960s, USSR introduced ruble coins with hidden suicide needles, intended for their agents to avoid capture and reveal no classified information.
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7. James Bond-inspired spy coins, like the "Knifecoin," integrated concealed blades, providing agents with a discreet tool for self-defense.
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8. Canadian quarter dollars with a button compass embedded in them enabled agents to navigate and stay on course during covert missions.