Did you know that it costs the US Mint 2 cents to produce every 1 cent coin due to the cost of materials and production? Countries such as Canada have already done away with their lowest denomination coins due to their costs and lack of usefulness.

As these “worthless” coins cause debates in their governments about whether or not they should be abolished, photographer Martin John Callanan is on a mission to save them… not as a currency, but rather in photographs.
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You might want to think twice the next time you snap a photo containing Canadian currency: the Royal Canadian Mint says that it holds copyright over those images.

It recently informed Nova Scotia folk musician Dave Gunning that he would need to pay licensing fees for the artwork used in his upcoming album No More Pennies. Set to be released on September 18th, the album art features three photographs that contain Canadian pennies (depicted as a sun, as train wheels, and on a table), designed to pay tribute the fact that the pennies were discontinued this year.
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‘Moneyface’ is a photo fad involving folded money and hybrid faces. Simply fold a banknote containing a portrait in half and combine it with a human subject.
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Did you know that Photoshop has built-in mechanisms that prevent you from editing photos of banknotes? After getting a payday, Reddit user tarballdotgz tried to Photoshop some of his hundred dollar bills, but ran into the above error in Photoshop. Even if you find a way to edit the images in Photoshop, there’s a good chance your printer will give you a similar error if you try to print the image out!

TIL that Photoshop doesn’t let you edit photos of currency [Reddit]

Update: Another interesting fact: apparently one mechanism used to do this is something called the “EURion constellation“, a specific pattern built into banknotes worldwide. (Thx David!)