Over the last few months, some lucky Brits have been profiting from changes to British currency. Now, with the introduction of a new £1 coin, there’s another opportunity to gain some extra cash simply by spotting a rare coin.

However, it’ll not be easy.

According to the Royal Mint,

“Unlike bank notes, coins don’t have serial numbers, so there won’t be anything different about the new circulating £1 coin to distinguish it from any other, apart from the fact those struck last year and this year ready for the launch will carry the 2016 and 2017 year dates.”

However, The Mirror has reported that there are some signs to look out for to determine whether a new £1 coin may be of value.

For example, you should be looking out for:

“Any potential die errors during production, which occurs when the dies have become misaligned, could be worth a lot of money.”

Likewise, more than 200,000 of the new £1 coins were sent out to retailers last year for testing, and if you can get your hands on one of these then you may be able to sell them for a significant price!

According to Alex Cassidy, from GoCompare’s Coining It In,

“If these new trial coins turn out to be as valuable as 1994’s, then anyone who gets their hands on them now could be sitting on a future goldmine.”

So, keep an eye out and you might just find something worth having!