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.
South Korean won
The banknotes include over 10 security features in each denomination. The 50,000-won note has 22 security features, the 10,000-won note 21, the 5,000-won note 17, the 2,000-won note 10 and the 1,000-won note 19. Many modern security features that can be also found in euros, pounds, Canadian dollars, and Japanese yen are included in the banknotes.
Some security features inserted in won notes are:
For the first time in the world, KOMSCO, the Korean mint, inserted a new substance in the notes to detect counterfeits. This technique is being exported to Europe, North America, etc.As the South Korean economy is evolving through the use of electronic payments, coins of the South Korean won are becoming less used by consumers. The Bank of Korea began a trial which would result in the total cessation of the production of coins of the South Korean won.