This is a series of Hyrulian banknotes as imagined by DeviantARTist G33k1nd159153. It's a clever concept, but I'd still prefer to carry around a wallet of actual rupees. They're like jewels, and who doesn't want to walk around with a pouch full of jewels? Plus you can find them in bushes and pots. If I was smashing pots and found paper money I don't even know if I'd want it.
Thanks to Grover, who suspects that jerk Ingo at Lon Lon Ranch is counterfeiting rupees out of plastic.