The £5 denomination coin includes numbers, letters, and symbols that can be used to uncover layers of secrets, riddles and puzzles that form the Great British Treasure Hunt, the Royal Mint said. It ...

Mathematician Bobby Seagull described the coin as ‘an invitation to a nationwide intellectual adventure’ (Royal Mint/Casey Gutteridge/PA) A coin will form part of a nationwide code-breaking challenge, ...

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‘Code breaker’ coin gives competition entrants chance to win a solid gold bar The Royal Mint is launching the the Great British Treasure Hunt, with its £5 denomination coin helping people to enter the ...

Dorothy Braden Bruce, 97, reacts to a visitor’s question before she began signing copies of “Code Girls: The Untold Story of the American Women Code Breakers of World War II,” written by Liza Mundy, ...