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.
Economy of North Korea
The Central Bank of North Korea, under the Ministry of Finance, has a network of 227 local branches. Several reissues of banknotes in recent years suggest that citizens are inclined to hoard rather than bank any savings that they make from their incomes; reportedly they now also prefer foreign currency. At least two foreign aid agencies have recently set up microcredit schemes, lending to farmers and small businesses.