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
The first note put in circulation by the Bank of Korea in 1950 was printed in Japan by the National Printing Bureau (国立印刷局). The next year the Korea Minting and Security Printing Corporation was created and took over as printer of South Korean currency.