YOU could be missing out on hundreds of pounds of free cash by not checking your change for rare and valuable coins.
The rare 20p coin has been dubbed "the holy grail of change collecting" by The Britannia Coin Company of Royal Wootton Bassett.
A rare Royal Mint 20p coin fetched £62 on eBay after sparking a mini bidding war. The 20p coin, a "mule" coin, minted in 2008, sold for more than 300 times its face ...