Gw mau tau Sajarah dari Yén Jepang. Jelasin dalam bahasa sunda

The yén was introduced by the Meiji government in 1870 as a system resembling those in Europe. The yén replaced the complex monetary system of the Edo period, based on the mon. The New Currency Act of 1871 stipulated the adoption of the decimal accounting system of yén (1, 圓), sen (, 錢), and rin (, 厘), with the coins being round and cast as in the West. (The sen and the rin were eventually taken out of circulation in 1954.) While not a usage specific to currency, large quantities of yén are often counted in multiples of 10,000 (man, 万) in the same way as values in the United States are often quoted or rounded off to hundreds or thousands.  The yén was legally defined as 0.8667 troy ounces (26.956 g) of silver, which is about US$6.50 in today's money. The Act also moved Japan onto the gold standard.

The yén lost most of its value during and after World War II; after a period of instability, the yén was pegged at 1 US dollar = ¥360 from April 25, 1949, to until 1971 when the Bretton Woods system collapsed and the value of the yén began to float. As of December 2005, there are about ¥115 to the US dollar, about ¥139 to the Euro, and about ¥205 to the pound sterling. After the Plaza Accord of 1985, the yén appreciated against the dollar.