The coins in your change that could be worth way more than their face value, from the 2p coin valued at £1,400 to this Peter Rabbit 50p (issued at Easter 2016), which could be worth 40 times its face value.
The Kew 50p coin that could be worth 200 times its face value
5th:Queen Elizabeth II Sold for $4m The world’s largest gold coin (weighing a hefty 100 kilos) was minted by the Royal Canadian Mint, with maple leaves on one side and Queen Elizabeth II on the other. It fetched $4m in an auction at the Dorotheum auction house, Austria, despite its face value being just $1m. Its purity is 99.999pc, the purest type in the market.