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Hollow Coin

1950s-1990s, KGB

Hollow coins easily concealed microfilm and microdots. They were opened by inserting a needle into a tiny hole in the front of the coin.

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Additional Objects

John Walker Briefcase

Circa 1980s

Hand Grenade with Booby Trap Device

Circa 1942-1945

Confederate Civil War Cipher Disk

Circa 1862