Posting on the Melbourne with Kidz Facebook page, the mum writes: ‘We found the famous MULE Dollar!
‘What’s a Mule dollar? It’s a small number on the year 2000 $1 dollar coins that had been minted using the incorrect obverse die (heads side) and release into circulation by mistake and only discovered a year or two later.
‘Royal Australian Mint accidentally minted the coins using the smaller 10 cent obverse die (head side) by mistake. With just a 1.4 millimetre difference in diameter between the 10 cent and $1 coin you can clearly see a double rim circle going around the edges of the coin.
‘These errors are worth anywhere from $500 to $3000.
‘Check your chance and empty out the kids piggy bank!!!!! You could be sitting on a winner!’
Sharing photos of the lucky Mule Dollar, it’s clear to see the ‘double rim’ that the mum is referring too. Do you have a lucky coin too? Better hurry up and check!