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→Early Coinage
After the so-called Wadô kaihô ("Wadô coins"), other currencies continued to be produced until [[958]]. Known as the "Twelve Imperial Coinages" (皇朝十二銭, ''kôchô jûnisen''), each was named after the [[Japanese Eras|Imperial reign era]] in which they were produced.<ref>Richard von Glahn, "The Ningbo-Hakata Merchant Network and the Reorientation of East Asian Maritime Trade, 1150-1350," ''Harvard Journal of Asiatic Studies'' 74:2 (2014), 256.</ref> These included the Mannen tsûhô, Jinkô kaihô, Ryûhei eihô, Fûju shinpô, Shôwa shôhô, Chônen taihô, Jôeki shinpô, Jôgan eihô, Kanpyô taihô, and Engi tsûhô.<ref>Kobata. p98n1.</ref>
After the so-called Wadô kaihô ("Wadô coins"), other currencies continued to be produced until [[958]]. Known as the "Twelve Imperial Coinages" (皇朝十二銭, ''kôchô jûnisen''), each was named after the [[Japanese Eras|Imperial reign era]] in which they were produced.<ref>Richard von Glahn, "The Ningbo-Hakata Merchant Network and the Reorientation of East Asian Maritime Trade, 1150-1350," ''Harvard Journal of Asiatic Studies'' 74:2 (2014), 256.</ref> These included the Mannen tsûhô, Jinkô kaihô, Ryûhei eihô, Fûju shinpô, Shôwa shôhô, Chônen taihô, Jôeki shinpô, Jôgan eihô, Kanpyô taihô, and Engi tsûhô.<ref>Kobata. p98n1.</ref>
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.<ref>When a good was used as payment, its value was often counted in terms of ''jun-kinu'' 準絹, ''jun-nuno'' 準布, or ''jun-kome'' 準米, that is, in terms of how much silk, cloth, or rice it would have been worth.</ref> One ''hiki'' 疋 of silk was generally valued as equal to one ''[[koku]]'' of rice (1 ''koku'' = 10 ''[[Japanese Measurements|to]]'' 斗 = 100 ''[[Japanese Measurements|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.<ref>Kobata. pp98-99.</ref> 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.
Coinage at this time was used only by the aristocracy or religious elites, and chiefly only for official court expenditures, 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.<ref>When a good was used as payment, its value was often counted in terms of ''jun-kinu'' 準絹, ''jun-nuno'' 準布, or ''jun-kome'' 準米, that is, in terms of how much silk, cloth, or rice it would have been worth.</ref> One ''hiki'' 疋 of silk was generally valued as equal to one ''[[koku]]'' of rice (1 ''koku'' = 10 ''[[Japanese Measurements|to]]'' 斗 = 100 ''[[Japanese Measurements|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.<ref>Kobata. pp98-99.</ref> 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.
The court stopped producing new coin in 958. By the time of the issuing of the ''Engi taihô'' ("Great Laws of Engi," c. [[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 the government stopped minting coins for a time. With silk, rice, and other commodities as far more widely standard, widely used, modes of exchange or measures of value, the court realized there simply was not a need - or an advantage - in making the effort and expenditures to produce hard currency. Around [[1068]]-[[1074]], the court then instituted official exchange values (''kokahô'', 沽価法) for silk, gold, rice, and certain other commodities, in order to standardize the amounts paid to the court in [[tribute]] by [[kuge|court nobles]] and others.<ref>Von Glahn, 256-257.</ref>
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.<ref>Kobata. p98.</ref> The court noble [[Saionji Kintsune]] alone is known to have imported as much as 100,000 ''kan'' of Song coins, enough to fund the construction of a dozen or more buildings. Song coins circulated so widely that as early as 1240 the [[Kamakura shogunate]] had reversed its various bans on the usage of cash, permitting its use everywhere but in the northernmost provinces.<ref>Kang, David C. “Hierarchy in Asian International Relations: 1300-1900.” Asian Security 1, no. 1 (2005), 65.</ref>
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.<ref>Kobata. p98.</ref> The court noble [[Saionji Kintsune]] alone is known to have imported as much as 100,000 ''kan'' of Song coins, enough to fund the construction of a dozen or more buildings. Song coins circulated so widely that as early as 1240 the [[Kamakura shogunate]] had reversed its various bans on the usage of cash, permitting its use everywhere but in the northernmost provinces.<ref>Kang, David C. “Hierarchy in Asian International Relations: 1300-1900.” Asian Security 1, no. 1 (2005), 65.</ref>