You might be carrying more brass in your pocket than you think. As happens every time a new pound coin is released, a bevvy of collectors are willing to pay well over face value - literally - to get themselves a unique specimen.
To that end, any new pound coins can be sold for 250 times their legal tender value, a princely sum of, well, £250 each. Collectors on eBay are snapping up the newest pound coins, plus any that have faults or noticeable marks that make them unique.
The new quids are thought to be the world's most advanced coin and have been available since March, although the very special ones that are worth £250 each are a little different, even from the new coins.
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Given that they don't have serial numbers - like the new plastic fivers - they are particularly hard to spot, but if found, they're worth a mint.
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Alex Cassidy, an expert from GoCompare's Coining It In, told the Mirror: "As with the current £2 coins, the 2017 £1 coin is bi-metallic - in this case an outer 'gold' coloured nickel-brass band with an inner 'silver' coloured cupro-nickel disc.
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"Because of this, any potential die errors during production, which occurs when the dies have become misaligned, could be worth a lot of money.
"Punters should pay attention to both the floral crown on the reverse side for any rotations, as well as the Queen's head, which should sit directly above the new bevelled edge."
The new pound coins were only released as a trial and thus numbers are very limited. Alex is well aware of the allure of the newest tender around.
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"These new £1 trial coins are fascinating, especially considering the financial precedent of the £2 trial coins in 1994, which have since become one of the most sought after collectable coins in Britain," he said.
"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."
"2017 is expected to be a good year for collectors, with the trend of 50p collectable limited release coins continuing into the new £1 coins," he continued.
"That's the main thing to look out for in the near future, because the first run of those collectibles will be huge."
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Chards, the go-to name in bullion and gold, disagreed with Alex, however. "We do not think that the 2017 circulation £1 coin will be a good investment - however, the collector coins such as the silver proof, silver proof piedfort and gold proof will be the ones to invest in," they said in a statement.
Words: Mike Meehall Wood