Scroll down to see if you have a rare coinMONEY MAKER Exact tiny flick to spot on your 1p coin that makes it worth 2,500 times more – do you have one? A ONE pence coin could be worth up to 2,500 times more if it has a particular spot on it. They said: "You need to check this one for a very strange error that makes the coin valuable, known as the 1893 'over-two penny. It's always good to remember a rare coin is only worth as much as someone is willing to pay for it. If you've got a potentially rare coin that you would like to sell at auction, you can contact The Royal Mint's Collectors Service.