A new 50p coin, the Atlantic Salmon, has dethroned the iconic Kew Gardens 50p as the rarest coin in circulation. Released in late 2023 to commemorate King Charles III’s Coronation, the Atlantic Salmon 50p is already commanding high prices on eBay and among collectors, with only 200,000 minted. Discover why this coin is causing a stir in the collecting community and what to look for if you find one in your change.