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.
North Korean won
Initially struck in 2002, the coins were intended for use shortly after the dollar peg was removed from the currency. The 50 chon and 1 won were smaller than the previous designs, while the new 10 chon was the same size as the old. Hyperinflation became a very sudden reality, however, and the new coins were never released as planned. In 2008, 1 and 5 chon coins were also struck when a plan for monetary revaluation began. The coins were finally released into circulation in December 2009 but due to the flawed nature of the revaluation these coins again carry very little value, with especially the 1 and 5 chon being virtually irrelevant.