Anti-counterfeiting of South Korean Banknote that appears when exposed to UV rays
Banknote:The Bank of Korea<br>Photo:<a href="//commons.wikimedia.org/wiki/User:Ox1997cow" title="User:Ox1997cow">Ox1997cow</a>
Banknote:The Bank of Korea<br>Photo:<span class="int-own-work" lang="en">Own work</span>