Currency

A number of different modes of currency were used throughout Japanese history, including, in the pre-modern period, the heavy use of Chinese coins. By the Edo period, a relatively standardized system of gold and silver coinage was in place, though it experienced dramatic inflation and devaluation, among other financial crises, at times. Systems which served as precursors for a "modern" system of banks and paper currency, along with futures markets and other such economic/financial developments, emerged in the 18th-19th centuries, and beginning in the Meiji period, "modern" systems based on the Western model were established.

Early Coinage

The first currency to be produced in Japan was minted in the Wadô era (708-715), an era named after the discovery of copper in Musashi province (Wadô 和銅 literally means "Japanese copper"). These coins, with a face value of one mon, were based on the kai yuan tong bao coinage then circulating in Tang Dynasty China. These small round coins with square holes in the middle would serve as the standard model for the shape or form of coins in both China and Japan for many centuries.

After the so-called Wadô kaihô ("Wadô coins"), other currencies continued to be produced until the mid-10th century, each named after the Imperial reign era in which they were produced. These included the Mannen tsûhô, Jinkô kaihô, Ryûhei eihô, Fûju shinpô, Shôwa shôhô, Chônen taihô, Jôeki shinpô, Jôgan eihô, Kanpyô taihô, and Engi tsûhô.

Coinage at this time was used only by the aristocracy or religious elites, while the rest of the population functioned on a barter system in which value or buying power tended to be expressed in terms of silk, cloth, or rice. One hiki 疋 of silk was generally valued as equal to one koku of rice (1 koku = 10 to 斗 = 100 shô 升), though this varied. Still, on average, from the Heian period through the Sengoku period, one koku of rice was considered equivalent to one kanmon, or 1000 mon in coins; one hiki remained steadily equivalent to ten mon of coins through the Edo period. The direct association of goods, especially rice, with value, would continue through the mid-19th century; in the Edo period (1600-1868), lands would be valued in terms of their agricultural production, taxes would be paid in rice (or equivalents), and samurai would be paid their stipends in rice.

These early currencies fell out of usage, however, in the tenth century. By the time of the issuing of the Engi taihô (901-923), the currency had become debased, meaning that a given coin, despite officially having a certain denomination, actually contained less precious metal than its nominal value. In other words, there was severe inflation, as a given amount of currency no longer had the value (or buying power) it once did. And so, people lost confidence in the currency, and it fell out of circulation.

Several centuries later, beginning in the 12th century, Song dynasty Chinese coins began to be imported in considerable volumes, as a natural result of increased trade with China. The Northern Song, in fact, minted more copper coins than any other Chinese dynasty, and though the export of coinage from China was banned, Chinese coins nevertheless flowed throughout the East Asia region.

Muromachi Period and Ming Trade

Chinese coins continued to be a major presence in Japanese markets - at least among the elites - into the Muromachi period (1333-1573). The Ashikaga shogunate entered into formal trade relations with Ming Dynasty China in the late 14th century, and maintained relations until the mid-16th. Coins associated with the reign of the Yongle Emperor (1403-1425) were particularly numerous in Japan due to the close Sino-Japanese relations during that period, under Shogun Ashikaga Yoshimitsu, but coins issued in the Hongwu (1368-98) and Xuande (1425-35) reigns in particular have also been found in considerable numbers. The export of gold, silver, and copper from China remained forbidden in this period, but copper coins ended up being taken back to Japan by the tribute envoys anyway, after selling their cargoes in China.

The use of currency expanded considerably in Japan in the Kamakura (1185-1333) and Muromachi periods. Taxes previously paid in rice or other crops were now increasingly paid in Chinese coinage (though payment in crops was still very common), and coins circulated more widely. Systems of moneylenders called kariage or dosô emerged. But the currency being used was almost exclusively Chinese coins.

Japanese coins first began to re-appear, and the volume of Chinese coins in circulation in Japan to drop, in the mid-15th century. Due to price fluctuations, Japanese merchants / tribute envoys in China found it more profitable to purchase goods - such as silk - in China to resell in Japan, rather than bringing Chinese coin back. Some areas in western Japan even began minting their own coins in imitation of the Chinese ones, and sending traders with Japanese coins to China to buy Chinese goods. Chinese coins from the late 15th century, e.g. those minted in the Hongzhi (1488-1506) reign, are quite rare finds for archaeologists in Japan today, and those from later reigns are almost entirely absent.

In the Sengoku period (1467-1600), and especially as Japan began to become more integrated in the mid-to-late 16th century, regional daimyô began to expand their mining efforts, and gold and silver came to be more widely circulated, and exported. Gold dust had long been a common element in gifts (tribute) paid by samurai lords and shogunates to the Imperial Court; bags of gold dust of a designated size, called nô (納), were valued at 20 ryô. In the central regions of the country, where mining was most prevalent, taxes came to increasingly be paid in gold and silver; this was then exchanged for coins or rice. Kin'ya and gin'ya (gold and silver dealers) emerged and enabled these conversion (exchange) transactions. These dealers, along with firms officially licensed by the local lord, called ginza or tenbinza, also dealt in producing, and certifying, pieces of gold and silver with a designated level of refinement or quality. Certified pieces, called hankin or gokuin-gin would be marked with numbers, kanji, kaô (monograms), or crests, indicating the firm's certification. The term hankin would later be used in the Edo period to refer chiefly to ôban coins, but in fact the term could be applied to all certified & marked pieces of gold.

In the Edo period, the ryô would become one of the more common monetary denominations, and would become intricately tied into the koku, a measure of rice. However, prior to that time, the ryô was more closely related to a Japanese adaptation of the Tang system of measuring precious metals. In Tang China, precious metals were measured in "big" chin (J: kin, 斤) and "small" chin, and in "big" liang (J: ryô) and "small" liang, with the smaller denomination being one-third that of the "large" denomination. In the Nara and Heian periods, Japan simply made use of the "small" Chinese denominations as a standard denomination, omitting the "small" designation. But by the end of the 13th century, the Japanese implemented their own system of denominations, equating one ryô of gold to four monme and five bu.

For the sake of convenience, the ryô was, for a time in the late 16th century, devalued to four monme four bu. Around the same time, the denomination mai, equal to ten ryô, was briefly used.

Coins were minted from time to time in the Sengoku period by various local/regional power-holders, including lesser daimyô, as well as the likes of Oda Nobunaga. Toyotomi Hideyoshi, after securing control over most of the archipelago, minted coins as well. The so-called Tenshô-hishi-ôban, an ôban coin shaped like a chestnut (hishi), was first minted in 1588, the sixteenth year of the Tenshô era; similar coins continued to be made for several years afterwards. However, the vast majority of such coins produced in the 16th century were ten ryô coins, produced to be given as gifts to loyal commanders, or for other similar purposes, and not for general circulation.

Edo Period

Samurai stipends in the Edo period were paid out in koku, i.e. in rice. However, gold and silver coinage was used in everyday exchanges (especially among chônin/commoners - peasants, merchants, artisans, etc.). In Edo, gold was more widely circulated, while in Kamigata (the Kyoto-Osaka area), silver was more commonly the mode of exchange. Gold was exchanged in relatively standardized coins issued by the shogunate, known as koban, and worth one ryô apiece.

A ryô was considered to be roughly equal to one koku, which in turn is said to have been roughly the amount of rice needed to feed a man for a year. However, rice and gold prices fluctuated dramatically over the course of the period, and the exact amount of rice that comprised a koku is, in any case, a subject of debate. Over the course of the Edo period, the cost of rice dropped dramatically relative to the value of gold, making samurai (who relied on stipends paid in koku) less and less wealthy than members of the merchant class who earned their incomes in gold and silver.

The use of the gold koban, however, was most common in and around Edo, and the farther one traveled from Edo, the less standard it became. At the beginning of the Edo period, there were over one hundred types of gold coins in circulation, and so in many parts of the country, particularly the active commercial centers of Kyoto and Osaka, and other areas at a considerable distance from Edo, currency continued to be valued by weight, and not by face value. While gold coins were particularly standard in Edo, in the rest of the country, silver and copper coins remained quite common, and were valued by their weight, in momme. One hundred momme were worth roughly one momme of silver, and one thousand momme was called one kanme. Weights, previously not fully standardized, were in the Edo period restricted to those produced by the Gotô family, whose weights were to be used in all transactions for weighing out, for example, gold or silver. (Rice was measured by volume, not by weight.) Gotô Tokujô, who produced weights and coins for Oda Nobunaga, and gold engraver Gotô Yûjô (1440-1512) were members/ancestors of this family.

The Edo period monetary system, or at least its foundations, was established quite early in the period. In 1601 (Keichô 6), the Tokugawa oversaw the minting of a series of coins, in fairly large quantities, explicitly for circulation. The largest was the Keichô ôban, worth 10 ryô; the Keichô koban and ichibuban, gold coins worth 1 ryô and 1 bu respectively, were "face value" coins, with the value of one bu dependent not directly on the weight of the gold coin, but rather tied to the rising or falling value of the koban. Silver chôgin and mameita-gin coins continued to be valued by weight, and circulated in paper wrappings.

Regional currencies continued to be used for a time, along with hankin and gokuin-gin certified bullion. Kaga han (Ishikawa prefecture), which is still known today for its precious metals, was one of a number of places which had its own systems of certified bullion (mainly in silver), including what was called shuhô-gin - certified silver in a vermillion wrapper. Bullion sent to Edo or other parts of the country from these mining areas was often stamped or otherwise designated by marking for that region. To take just one example, bars from Niigata were stamped with the character ei/sakae (栄, prosperity). Akita han was also a major mining and minting area, producing gold and silver sen (coins in the same form as copper coins traditionally), along with koban, crude silver ore (jô-gin), and certified silver (gokuin-gin). Akita employed its own producers of weights and scales.

By the end of the 17th century, the shogunate took control of the minting of currency, of regional ginza and kinza, and standardized the system, eliminating regional variant currencies. Though this might seem on the surface like it might stifle economic development, in fact, the opposite occurred, as regional differences in currency systems, and protective policies put in place by the various domains, were eliminated, allowing freer circulation of money and goods throughout the country, especially in and out of the major economic centers of Edo and Osaka.

At the same time, precious metals, especially silver, flowed out of the country in great volume, especially through Nagasaki, and by the end of the 17th century, mining output declined dramatically. This led to dramatic devaluations in the coinage, and rampant inflation, at various times over the course of the Edo period, as the shogunate attempted to implement financial/monetary policies to address the declining supply of precious metal.

Prices

Though prices varied widely, of course, over time, from place to place, and depending on the quality of the goods or other factors, the following figures might provide a rough idea of prices (i.e. the value of the ryô) in the "high" Edo period (18th to early 19th centuries).

• 2 or 3 momme - a cheap ukiyo-e print
• 20 momme - an ukiyo-e print of good quality.
• 32 momme - the cost of seeing a play at Ryôgoku in 1820.
• 75 momme - the cost of the journey from Osaka to Nagasaki by boat (roughly 14-20 days).
• 90 momme - the cost of a multi-volume illustrated book, such as Soga Monogatari.
• 1000 momme or 1/4 ryô - the cost of sending a child to terakoya (temple school) for a year
• 1 ryô - the cost for a man's formal kamishimo outfit, including hakama, haori, and kosode.
• 1 ryô - the cost of commissioning a scroll painting by a well-known painter; a screen painting by the same painter might cost roughly 6-10 ryô.
• 2-3 ryô - the cost of hiring a maid for a year (i.e. the income made by a maid in a year)
• 6 ryô - a typical annual wage for a laborer
• 6 to 10 ryô - the fee to commission a major artist for a single set of lavish byôbu (folding screen) paintings; could be as much as even 40 ryô depending.
• 10 ryô - the cost of a first visit to a Yoshiwara establishment, including tips for the nakai and taikomochi.
• 200 ryô - A month in the Yoshiwara could cost as much as this.
• 360 ryô - the cost of buying a small room (80 sq yards) in Edo.
• 483 ryô - The annual salary of a typical hatamoto in 1711.
• 500 ryô - The cap on kabuki actors' salaries, imposed by the Kansei Reforms in 1794.
• 800 ryô The salary of kabuki actor Ichikawa Danjūrō I (1660-1704) peaked at this amount.
• 1000 ryô - Yoshizawa Ayame I (1663-1729) was the first kabuki actor to attain an annual salary of this amount.

Denominations Chart

Gold
1 bu 分	1/10 monme	.375 grams
1 monme 匁	10 bu	3.75 grams
1 ryô 両	4 monme + 3 bu	1 koku of rice
Silver
1 ryô 両	4 monme + 3 bu
Rice
1 koku 石	10 to 斗	100 shô 升	1 ryô of gold	1 hiki of silk
Silk
1 hiki 疋	1 koku of rice

References

• Crawcour, E.S. and Kozo Yamamura. "The Tokugawa Monetary System, 1787-1868." Economic Development and Cultural Change 18:4, part 1 (1970). pp489-518.
• Kobata Atsushi. "Coinage from the Kamakura Period through the Edo Period." Acta Asiatica 21 (1971). pp98-108.

See Also

• 一文と一両の価値 (The Value of a Mon and a Ryô). Lists and charts of incomes and typical costs for goods and services in the Edo period. (In Japanese)
• 装備品 (Equipment). Costs for typical goods in the Edo period. (In Japanese)