Small minting mistakes are huge in the collecting world. A rare $1 coin has recently been put up for auction for a staggering $4,000. It’s hard to notice the difference unless you look super closely, but these coins are what’s called a ‘mule’ - and these small minting mistakes are huge in the collecting world. Watch the full story above. We look at 10 Australia coins worth big money. These are valuable foreign coins to look for in your coin collection. This video is sponsored by Noble Gold In. Rare Australian 1938 Silver Proof Coin Set. Being Sold as a Collection. Coins Description: The Australian Pre Decimal 1938 Silver Coin Collection. Set Comprises: Three Pence (3d), Six Pence (6d), One Shilling (1/-) and Two Shilling (2/- or Florin). Grading: PR64 PCGS Graded and Slabbed. The Royal Australian Mint’s website reveals that in 1972 just 8.3 million coins were created. For comparison, 48.8 million were printed the following year. Mr Sanders found a 5c coin from 1972 and it sold for a whopping $200 — more than all his other 5c coins combined.

Rare Australian Coins Still In Circulation

Supplied video obtained Wednesday, June 5, 2019. The Royal Australian Mint has released a three-coin collectable series to celebrate 50 years since the Apollo 11 Moon landing. The world's first dome-shaped coloured nickel plated coin, a domed gold coin and a coloured silver domed coin are part of a collaborative set made with the United States Mint. The coins were launched by the Royal Australian Mint's CEO, Ross MacDiarmid with the support of Operations Scientist at CSIRO's Parkes radio telescope, Mr John Sarkissian; former Parkes radio telescope site electrician and driver, Ben Lam; former Honeysuckle Creek Tracking Station Deputy Station Director, Mike Dinn; and Royal Australian Mint Coin Designer, Adam Ball. "We are honoured to share these unique coloured domed coins, including the magnificent collaborative set with the United States Mint, to mark 50 years since Australia shared the first human perspective of the Moon's surface with the world," Royal Australian Mint CEO Ross MacDiarmid says. (AAP VIDEO/Supplied/Royal Australian Mint)

This fancy little wave in the ‘2’ is rare and makes the coin worth about $2000.Source:Facebook

Check your loose change or that old drawer littered with coins to see if any have imperfections from the Royal Australian Mint that could make them worth thousands.

Antirobos slot. Collectors go crazy for tiny minting errors that are so subtle most go unnoticed to the untrained eye.

A 5c piece from 2007 that incorrectly had the Queen’s head on both sides of the coin was sold for thousands.

Town Hall Coins and Collectables expert Matthew Thompson told The Daily Mail this mistake was named a “double-obverse”.

“The last one I sold was for $3500,” he said.

“That one was in top-end condition and so was worth thousands. One in really poor condition, you’d still be looking at a few hundred for.”

Mr Thompson said a simple check through the coins could pocket an eagle-eyed enthusiast thousands.

Double-headed 5c pieces from 2007.Source:Facebook

“I’ve done it before if I’ve a bag of coins or change jars. If you just spend a bit of time going through them it can certainly pay off,” he said.

Mistakes also include coins being clipped during the minting process or other errors in the stamping of the coin.

“People don’t expect institutions like the mint to make mistakes,” he said.

“But from time to time things can go awry. If you see mistakes on a coin, if you have something interesting, odd or out of place, then other people are likely to find it interesting, too — that’s why people collect.”

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Mr Thompson said a $1 piece in 2000 was accidentally stamped with the head from a 10c piece.

If your $1 coin from 2000 has two rings on it, you could be $4000 richer. Picture: eBaySource:Supplied

“It (the head side) is slightly smaller, so it gives a double-ring effect,” he said.

“If you see two rings on your dollar coin, it could be worth a few hundred or up to $4000 in really good condition.”

About 6000 of these were made but that number is unconfirmed.

Are they rabbit ears on a kangaroo?Source:Facebook

Rare Australian Coins 20 Cents

A more common mistake is a kangaroo on the $1 coin appearing to have rabbit ears. These coins can be worth about $30.

This fancy little wave in the ‘2’ is rare and makes the coin worth about $2000.Source:Facebook

The Facebook page Detecting Downunder discusses another rare currency that has a slightly curly “2” on the 20 cent piece from 1966. These can fetch up to $2000.

“If you happen to find one of these little beauties, it could be worth big money as these coins are currently selling for between $350 and $800 EACH on eBay, with one at $2000, and they’re only getting more valuable each year,” the Facebook post said.

Rare Australian Coins Worth Money

Rare Australian Coins

The faulty coin has a wavy top edge on the base of the number “2”.