The Japanese yen (JPY) is the official currency of Japan. It is the third most-traded currency in the foreign exchange market after theUnited States dollar and the euro. It is also widely used as a reserve currency after the U.S. dollar, the euro and the pound sterling. As is common when counting in East Asia, large quantities of yen are often counted in multiples of 10,000 (man, 万) in the same way as values in Western countries are often quoted in thousands.
Coins
Coins were introduced in 1870. There were silver 5, 10, 20 and 50 sen and 1 yen, and gold 2, 5, 10 and 20 yen. Gold 1 yen were introduced in 1871, followed by copper 1 rin, ½, 1 and 2 sen in 1873.
Cupronickel 5 sen coins were introduced in 1889. In 1897, the silver 1 yen coin was demonetized and the sizes of the gold coins were reduced by 50%, with 5, 10 and 20 yen coins issued. In 1920, cupro-nickel 10 sen coins were introduced.
Production of silver coins ceased in 1938, after which a variety of base metals were used to produce 1, 5 and 10 sen coins during the Second World War. Clay 5 and 10 yen coins were produced in 1945 but not issued for circulation.
Coins in denominations of less than 1 yen became invalid on December 31, 1953, following enforcement of the Small Currency Disposition and Fractional Rounding in Payments Act.
In 1955 the current type of aluminium 1 yen was introduced, along with unholed, nickel 50 yen. In 1957, silver 100 yen pieces were introduced. These were replaced in 1967 by the current, cupro-nickel type, along with the holed 50 yen coin. In 1982 the first 500 yen coins were introduced.
The date (expressed as the year in the reign of the emperor at the time the coin was stamped) is on the reverse of all coins, and, in most cases, country name (through 1945, 大日本 or Dai Nippon, “Great Japan”; after 1945, 日本国, Nihon koku, “State of Japan”) and the value in kanji is on the obverse, except for the present 5-yen coin where the country name is on the reverse.
As of April 2011 the 500 yen coin was the highest-valued coin to be used regularly in the world (depending on exchange rates, the rarely-used 5 Cuban convertible peso coin is sometimes the highest-valued), with value of over US$6. Because of this high face value, the 500 yen has been a favorite target for counterfeiters; it was counterfeited to such an extent that in 2000 a new series of coins was issued with various security features, but counterfeiting continued.
The 1 yen coin is made out of 100% aluminum and can float on water if placed correctly.
On various occasions, commemorative coins are minted, often using gold and silver with face values as high as 100,000 yen.The first of these were silver ¥100 and ¥1000 Summer Olympic coins issued for the 1964 games. Recently this practice is undertaken with the 500 yen coin, first in commemoration of the Nagano Olympic games in 1998, and then the Aichi Expo in 2005. The current commemorative 500 and 1000 yen coin series began circulation in December, 2009, with 47 unique designs for each with only one available from banks in each prefecture. 100000 of each have been minted and they are all currently (as of October, 2010) still available in major banks at face value. Someone collecting one of each coin would need to invest 70500 yen, thus creating a major source of income for the Japanese government. Even though all commemorative coins can be used, they are not seen often in typical daily use and normally do not circulate.
Instead of displaying the CE year of mintage like most nations’ coins, yen coins instead display the year of the current emperor’s reign. For example, a coin minted in 2009 would bear the date Heisei 21 (the 21st year of Emperor Akihito’s reign).
Banknotes
The issuance of the yen banknotes began in 1872, two years after the currency was introduced. Throughout its history, the denominations have ranged from 10 yen to 10000 yen.
Before and during World War II, various bodies issued banknotes in yen, such as the Ministry of Finance and the Imperial Japanese National Bank. The Allied forces also issued some notes shortly after the war. Since then, the Bank of Japan has been the exclusive note issuing authority. The bank has issued five series after World War II. Series E, the current series, consists of ¥1000, ¥2000, ¥5000, and ¥10,000. The ¥2000 bills are rare these days, and often not accepted as a means of payment, not even in dispensing machines.