'There are a few different ways this happens', explained Philip Mussell, director of Coin News. It's the question we're all asking so we decided to ask expert Philip Mussell, the director of Coin News, for some advice on what coins belong in the piggy bank and what belongs on eBay. How often do coins in circulation become 'valuable'? Man who jumped in front of train at busy station apologises to witnesses from hospital bed as he reveals plans to rebuild his life.The Royal Mint launched a stunning set of Peter Rabbit coins in 2016 in honour of the literary genius (Image: Getty Images Europe)Īccording to the coin experts at ChangeChecker, the lower the mintage number, the more valuable the coin can be - and right now there are five 50p editions in circulation that are classed as 'scarce' and 55 more that are classed as potentially valuable.ĬhangeChecker have now created a scarcity index that tracks all 59 circulating 50p coins based on their worth, reports the Mirror Online.