Korean currency
The yen was the currency of Korea during the Colonial rule, from 1910 to 1945, and was issued by the Bank of Joseon It was equivalent to the Japanese yen and consisted of Japanese currency and banknotes issued specifically for Korea. It was replaced by the South Korean won at par in 1945, and by the North Korean won in 1947.
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.