Royal Mint launches nationwide code-breaking challenge with £29k gold bar up for grabsThe Great British Treasure Hunt will run from February 3 until March 30View 2 Images A new coin will form part of a nationwide code-breaking challenge, with the eventual chance for competition entrants to win a gold bar (Image: Casey Gutteridge/Royal Mint/PA Wire )The Royal Mint has unveiled a UK-wide code-breaking challenge which offers the opportunity for entrants to win a solid gold bar, worth as much as £29,000. ‌To be in with a chance of winning the prize, entrants must successfully complete levels two to five inclusive of the treasure hunt by 11.59pm on March 30. As the hunt progresses, those left in the game will have the chance to win the grand prize of a solid gold 250g bar. This isn’t just a coin; it’s an invitation to a nationwide intellectual adventure.”Nicola Mitchell, chief commercial officer at the Royal Mint, said: “The Royal Mint is stepping into a new era of coin collecting. The Great British Treasure Hunt coin is not just a beautiful collector’s item; it’s an interactive device with more than meets the eye.