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.
South Korean won
On June 23, 2009, the Bank of Korea released the 50,000-won note. The obverse bears a portrait of Shin Saimdang, a prominent 16th-century artist, calligrapher, and mother of Korean scholar Yulgok, also known as Yi I, who is on the 5,000-won note. This note is the first Korean banknote to feature the portrait of a woman. The release of the 50,000-won note stirred some controversy among shop owners and those with visual impairments due to its similarity in color and numerical denomination with the 5,000-won note.