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.
Korean currency
Following the end of the division of Korea, the won was introduced to replace the Korean yen. The won was subdivided in 100 jeon. The first banknotes were issued by the Bank of Joseon in denominations ranging from 5 jeon to 100 won. In 1950 the currency management switched to the Bank of Korea and new notes were then issued, mostly with higher denominations.