Banknotes of the Japanese yen
The banknotes of the Japanese yen are part of the physical form of Japan's currency. The issuance of the yen banknotes began in 1872, two years after the currency was introduced. Throughout its history, the denominations have ranged from 0.05 yen to 10,000 yen.
1 yen coin
In 2011 the increasing usage of electronic money led to a lack of demand for the coin; as a result one-yen coins minted until 2013 were only released in mint sets. Production resumed in 2014 due to a consumption tax hike that went into effect. The cost of manufacturing 1-yen coins has become an issue in recent years. By the early 2000s the cost of manufacturing the one-yen coin had risen, and by 2003 it cost 13 yen to mint a sheet of coins. Measures were taken in 2009, including raising money from the private sector but that did not completely ease the cost of manufacture, which was 3 yen for each 1-yen coin in 2015. One yen coins remain popular in places like Osaka where the coins have been traditionally used for merchant transactions. In October, 2017 it was reported that as a result prices in general across Japan have been difficult to rise steadily.