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.
Korean currency
After the division of Korea, North Korea continued using the Korean yen for 2 years until the Central Bank of the Democratic People's Republic of Korea was established on December 6, 1947 and a new currency was issued. It was at the time pegged at par to the Soviet ruble. It was revalued at a rate of one hundred to one in February 1959 and new won were issued.