This is the rarest 50p coin (Image: eBay)“Each design highlights King Charles III’s passion for conservation and the natural world, featuring wildlife such as the hazel dormouse and bees.”The designs – officially known as definitives – marked the final chapter of the King’s transition onto coinage but coins featuring the late Queen Elizabeth continue to exist in people’s change, co-circulating with the coins featuring Charles. How to get your old coins valuedKing Charles Atlantic Salmon 50p coin sells for more than £50 in Lancashire on eBayThe seller in Leyland received an impressive £52.55 for the rare 50p coin on eBay (more than 105x its face value). In 2023, 200,000 50p coins with this design were minted. Recommended reading:Royal Mint top 10 most valuable 50p coinsHere is a list of the top 10 most valuable coins, when they were made and how many were minted:Atlantic Salmon (2023), 200,000 Kew Gardens (2009), 210,000 Olympic Wrestling (2011), 1,129,500 Olympic Football (2011), 1,161,500 Olympic Judo (2011), 1,161,500 Olympic Triathlon (2011), 1,163,500 Peter Rabbit (2018), 1,400,000 Flopsy Bunny (2018), 1,400,000 Olympic Tennis (2011), 1,454,000 Olympic Goalball (2011), 1,615,500Have you ever found one of the most valuable 50p coins? Let us know in the comments.