Recently, certain coins that look pretty ordinary have ended up selling for thousands of pounds on online marketplaces. One lucky Glaswegian reportedly bagged £10,000 after selling a 'rare' Brexit coin on eBay in February.
And another seller received £1,500 for another 50p coin featuring Paddington Bear. Because of this, a lot of people are eager to know how they can tell if any coin in their collection is worth a fortune or not.
And if they do turn out to be rare, what's the best way of selling them and receiving the cash? To help people out, our sister title Glasgow Live spoke to coin expert Rachel Hooper, who is the project group manager for Change Checker, an online tool for finding and swapping rare coins.