Korean currency
In 1902, won was introduced as the official currency unit replacing yang at 1 won = 5 yang. The bank of Korea was established 1909 but soon after in 1910, Imperial Japan annexed Korean Empire. Under Colonial rule, the country was made to use the currency unit "yen" in the name of Korean yen, which took over the Korean won at par. After the division of Korea, the state of South Korea was established and recognized in 1948, and won was again made the official currency of the new state. "jeon" was made the subunit of the currency that divided it into 100 equal parts. Bank of Joseon issued the currency for independent South Korea for the first time that too in banknotes only.
North Korean won
In 1992, another redesign was carried out for banknotes, again in denominations of 1-, 5-, 10-, 50-, and 100-won. Older notes were once again withdrawn. These notes were smaller and crisper than the previous issue and depicted more modern themes. The 5 and 10 won banknotes were again issued in 1998, along with a 500 won banknote that same year but were stamped rather than engraved reflecting poorer production quality. In 2002, 1,000 and 5,000 won notes were introduced, followed by a 200 won note in 2005. The former two were identical in design to the 100 won though differing in colors and added security features, but the colored fields behind the text no longer extended all the way to the margins. In 2007, the 500 won had also been revised in this same manner along with being engraved for the first time to protect against counterfeiting. From 1998 onwards, all notes were dated using the Juche year along with the standard dating.