Japan+Yen

The **Japanese yen**  is the official [|currency] of [|Japan]. It is the third most-traded currency in the [|foreign exchange market]. (Wikipedia)

The origin of currency be traced to the Wu Zhu bronze coin of China, which was introduced under the Han Dynasty around 221 BC. (http://cn.advfn.com/currencies/jpy/about/JapaneseYen.html)

The Chinese were slow to accept unfamiliar coinage and preferred the familiar Mexican dollars, and so the Hong Kong government ceased minting these coins and sold the mint machinery to Japan.The Japanese then decided to adopt a silver dollar coinage under the name of 'yen', meaning 'a round object'. The yen was officially adopted by the [|Meiji] government in an Act signed on May 10, 1871. (Wikipedia)