Korean yen
The Korean yen was the currency of Korea between 1910 and 1945. It was equivalent to the Japanese yen and consisted of Japanese currency and banknotes issued specifically for Korea. The yen was subdivided into 100 sen. It replaced the Korean won at par and was replaced by the South Korean won and the North Korean won at par.
North Korea
The economy is heavily nationalized. Food and housing are extensively subsidized by the state; education and healthcare are free; and the payment of taxes was officially abolished in 1974. A variety of goods are available in department stores and supermarkets in Pyongyang, though most of the population relies on small-scale "jangmadang" markets. In 2009, the government attempted to stem the expanding free market by banning jangmadang and the use of foreign currency, heavily devaluing the won and restricting the convertibility of savings in the old currency, but the resulting inflation spike and rare public protests caused a reversal of these policies. Private trade is dominated by women because most men are required to be present at their workplace, even though many state-owned enterprises are non-operational.