LOOKING closely at your change could really pay off if you spot specific dates or details on rare coins.
A coin with a minting error or odd date could be worth a small fortune because very few actually make it into circulation.
These types of coins are very attractive to collectors who are sometimes willing to pay large sums for one.
You can make money from these rare coins by selling them at auction, either online or in person, or through a dealer.
The price of a coin varies based on things like demand at the time and how common it is.
It's important to remember that you aren't guaranteed to fetch huge amounts if you do choose to sell your change.
Anyone can list a coin on eBay and charge whatever amount they wish, but it's only ever worth what someone is willing to pay.
By checking the recently sold items you will get a more accurate indication of what people are willing to pay for a specific coin.
Coin experts at Change Checker Kate Morgan and Rachel Barnes have commented on the rarest 20p coins that could fetch you as much at £1, 400.
Here are the exact details to spot on rare 20p coins.