The was a Japanese oval

gold coin A gold coin is a coin that is made mostly or entirely of gold. Most gold coins minted since 1800 are 90–92% gold (22 karat), while most of today's gold bullion coins are pure gold, such as the Britannia, Canadian Maple Leaf, and American Bu ...

in Edo period

feudal Japan The first human inhabitants of the Japanese archipelago have been traced to prehistoric times around 30,000 BC. The Jōmon period, named after its cord-marked pottery, was followed by the Yayoi period in the first millennium BC when new inven ...

, equal to one '' ryō'', another early Japanese monetary unit. It was a central part of Tokugawa coinage. The '' Keichō'' era ''koban'', a gold piece, contained about one ryō of gold, so that koban carried a face value of one ryō. However, successive mintings of the koban had varying (usually diminishing) amounts of gold. As a result, the ryō as a unit of weight of gold and the ryō as the face value of the koban were no longer synonymous. In modern times, they are sold as ''Engimono'' (at-least, gold-foil cardboard versions), from Shinto shrines.

Foreign trade

The

Japanese economy The economy of Japan is a highly developed social market economy, often referred to as an East Asian model. It is the third-largest in the world by nominal GDP and the fourth-largest by purchasing power parity (PPP). It is the world's secon ...

before the mid-19th century was based largely on rice. The standard unit of measure was the

koku The is a Chinese-based Japanese unit of volume. 1 koku is equivalent to 10 or approximately , or about . It converts, in turn, to 100 shō and 1000 gō. One ''gō'' is the volume of the "rice cup", the plastic measuring cup that is supplied ...

, the amount of rice needed to feed one person for one year. Farmers made their tax payments of rice which eventually made its way into the coffers of the central government; and similarly, vassals were annually paid a specified ''koku'' of rice. The Portuguese who came to Japan in the 1550s, however, preferred gold to rice; and the koban, which was equal to three koku of rice, became the coin of choice in foreign trade. Some feudal lords began minting their own koban, but the value was debased with alloys of varying gold content. Edo authorities issued one currency reform after another and just about all of them debased the koban further. Additionally, counterfeit koban circulated after each reform, their value slightly less than that of the then current koban. By the time of Commodore Matthew C. Perry's visit in 1853, counterfeit koban from previous eras were preferred by merchants to the newer variants. The fraudulent older pieces were more valuable than newly minted koban. With the Meiji Restoration in 1868 a new series of coins was ordered based on European currency systems and the koban was discontinued.Stevenson, Jed
"PASTIMES: Numismatics"
'' The New York Times.'' September 3, 1989. Accessed August 19, 2009.

Cultural references

In the Konami franchise ''

Ganbare Goemon , known as ''Goemon'' and ''Mystical Ninja'' internationally, is a video game series created and produced by Konami. Etsunobu Ebisu is the joint producer of the franchise. These games revolve around the main character, Goemon ...

'', the lead character Goemon throws koban as

shuriken A ''shuriken'' ( ja, 手裏剣; literally: "hidden hand blade") is a Japanese concealed weapon that was used as a hidden dagger or metsubushi to distract or misdirect. They are also known as throwing stars, or ninja stars, although they we ...

s. The Japanese idiom is an equivalent for casting pearls before swine. The

Maneki Neko The ''maneki-neko'' (招き猫, ) is a common Japanese figurine which is often believed to bring good luck to the owner. In modern times, they are usually made of ceramic or plastic. The figurine depicts a cat, traditionally a calico Japanese Bob ...

is often depicted holding a ''koban'', though the koban most Maneki Neko hold is indicated to be worth ten million ''ryō''. In '' Super Mario Odyssey'', the regional coins in the feudal Japan themed Bowser's Kingdom are kobans with

Bowser , or King Koopa, is a fictional character, the primary antagonist in Nintendo's ''Mario'' franchise, and the arch-nemesis of Mario. In Japan, the character bears the title of . Bowser is the leader of the turtle-like Koopa race. Despite ...

's face on them.

References

{{DEFAULTSORT:Koban (Coin) Gold coins Coins of Japan Economy of feudal Japan Modern obsolete currencies

Foreign trade

Cultural references

See also

References