An American silver coin dating back to the 17th century, before the United States was founded, has sold for a record-breaking $2.52 million at auction, eight years after it was discovered in an old cabinet in Amsterdam.

There's a number of coins you need to keep an eye on in your pocket - with one selling for a staggering £750 and another for £205.

A small silver coin that was struck in 17th century Boston just sold for $2.5 million dollars. The 1652 Massachusetts threepence is about the size of a nickel, weighs only 1.1 grams, and the silver itself has a value of $1.