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A mind-blowing coin with a nifty hidden mechanic is shocking sex videoswowing the internet.

The object in question was made by Roman Booteen, an Instagram artist who creates intricate carvings on Zippo lighters and coins. Not only are the designs gorgeous to look at, some of them also have some sort of hidden feature or compartment.

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One rad coin that Booteen posted on his Instagram got a ton of attention for its really cool contraption. On the back of the silver dollar is a carving of a knight and woman looking at a indentation on a wall.

The knight's sword is actually removable, and it works as a key to unlock what's behind the indentation. By inserting it into a little notch on the edge of the coin, the indent opens up, and a grail is revealed.

Booteen's other creations also make use of a similar kind of mechanic. This includes a beetle engraving that opens up its shell, and a statue that's surrounded by spears.

Instead of a lock-and-key device, these coins have a little switch that can be pressed near the rim of the object. Just like the knight coin, another portion of the coin opens up after activating the switch.

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In addition to the coins, Booteen's lighter designs are also pretty cool. While they don't have a hidden switch you can mess around with, they're all very aesthetically pleasing to look at.

A lot of these designs are also based off films like The Nightmare Before Christmas and Alien. The carvings are super detailed, and the characters look exactly like they do the movie.

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Booteen's coins will sometimes pop up on eBay auctions where they'll sell for a tonof money. Just last year, a coin that "bites" your finger sold for over $10,000.

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At the moment, Booteen doesn't appear to have any coins for sale on eBay.