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.
Foreign Trade Bank of the Democratic People's Republic of Korea
The Foreign Trade Bank of the Democratic People's Republic of Korea (Joson Trade Bank) is North Korea's primary foreign exchange bank, and is owned and run by the North Korean government.