A RARE coin feature can turn your loose change into a $20,000 windfall.
Collectors are actively trying to get their hands on one of just 200 of these precious pennies.
According to the Professional Coin Grading Services, the 1990 No S Proof Lincoln Cent is considered a "beast" among collectors.
Finding this coin at major auctions or in the inventory of dealers is extremely rare.
This is the only proof coin from 1909 to this day missing the mint mark in the entire Lincoln cent series.
The mint mark is a small letter signifying where the coin was minted. It's on the face of the coin underneath the year.
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Being able to see this mistake with the naked eye is just one of many reasons why it's so popular.
All 1990 pennies have the "s" mint mark, as seen in this TikTok from @The_Coin_Guy.
The ones that are valuable will be missing this letter.
In the video, he showed the prices some of these coins have sold for. The "less valuable" ones have sold for over $4,000.
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However, the record for the most this coin has been sold for is $20,000.
Coin collectors carefully look through the seemingly endless amount of coins to find rare treasures, and they don't mind paying big bucks when they find some.
At a recent auction, a rare VDB Lincoln penny sold for $365,625 - a record sale in the rare coins world.
According to GreatCollections, an American Numismatic Association official auctioneer website, the penny in question broke the previous record for sales of the same coin.
KING OF COINS
The president of GreatCollections, Ian Russell, called it the "king of Lincoln proof cents."
The 1995 Lincoln Penny has two features making it extra valuable.
It features a "double die" effect, making it look like the word "Liberty" on the face of the coin was printed twice.
On this particular coin, the double die is so obvious it can be seen with the naked eye.
The other prominent feature of this coin is that it's missing the mint mark, which shows where the coin was minted.
At an auction in 2017, this penny raked in $5,054.
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This comes as another coin expert reveals the exact details to look for to find a "double die" penny worth $15,000.
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Plus, The Sun put together a list of the most valuable half-dollar coins to be on the lookout for.
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