Start checking your pockets and emptying that bowl you keep throwing your spare change into because rare $1 coins minted in 2000 are now fetching $1000 (or more).
The gold coins, known as the '$1/10c mule', have a distinctive double rim on the Queen side as a result of an error at the Royal Australian Mint, according to the Australian Coin Collecting Blog.
"The obverse of some of the 2000 $1 dollar coins had been minted using the Australian 10 cent obverse die by mistake," the ACCB says.
"With just a 1.4 millimetre difference in diameter between the 10 cent and $1 coin the error went unnoticed, and the legendary 2000 $1 'mule' was released into the wild."
There are currently a few 'mule' coins listed for sale on ebay, with some sellers asking for as much as $8,500.
However, as conceded by the ACCB, a coins value will ultimately be determined by the buyer, so those hoping to fetch outrageous prices might find themselves waiting a long time. Although, just this month, one of the coins did sell for $1500.
Others that have fetched prices ranging from $425 all the way to $2742.
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