Which is the currency that even the people of the country that produce(own) it does not need?
Answer: Maldivian Ruffiyaa
A few days back I went to book two tickets for a submarine dive in Male', the capital of Maldives. I had only Maldivian Ruffiyaa with me. They returned me saying "We will not accept Maldivian Ruffiyaa. You have to pay in US Dollars"