Top nine rarest and most valuable foreign coins you might find on your summer holiday worth up to £275k We reveal below how you can sell one of the coins if it turns up in your spare change Sam ...

RARE coins you might be carrying in your wallet could fetch prices of more than £1,000.If you have stashes of loose change lying around, it's worth c. Jump directly to the content.

Unlike 50p and 10p coins, the 20p design “has remained almost the same since it was first minted back in 1982, making only a handful of them actually valuable to a collector”, reports The Sun.

Mr Waterman said the coins are by far the most valuable coins on the market, with the collectable ranging in price from $30,000 to $700,000. ADVERTISEMENT.