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.
Taxation in North Korea
Officially, there are no taxes in North Korea. The date of 1 April is the North Korean "Tax Abolition Day". North Korean propaganda claims that North Korea is the world's only tax-free country. The North Korean state, however, still collects revenue from its citizens in the form of hidden taxation through various sales taxes. In particular, the turnover tax from consumption provides for the majority of the state revenue in North Korea. The North Korean state does, therefore, collect revenues, which internationally has been compared to a taxation system, but inside North Korea the word tax is not used, and the term for state revenue has been variously translated as "Socialist Income Accounting", "Socialist Economic Management Income", and in similar fashion.