Ancient Chinese coinage includes some of the earliest known coins. These coins, used as early as the Spring and Autumn period (770–476 BCE), took the form of imitations of the cowrie shells that were used in ceremonial exchanges. The same period also saw the introduction of the first metal coins; however, they were not initially round, instead being either knife shaped or spade shaped. Round metal coins with a round, and then later square hole in the center were first introduced around 350 BCE. The beginning of the Qin dynasty (221–206 BCE), the first dynasty to unify China, saw the introduction of a standardised coinage for the whole Empire. Subsequent dynasties produced variations on these round coins throughout the imperial period. At first the distribution of the coinage was limited to use around the capital city district, but by the beginning of the Han dynasty, coins were widely used for such things as paying taxes, salaries and fines.
The Vietnamese cash, also called the sapek or sapèque, is a cast round coin with a square hole that was an official currency of Vietnam from the Đinh dynasty in 970 until the Nguyễn dynasty in 1945, and remained in circulation in North Vietnam until 1948. The same type of currency circulated in China, Japan, Korea, and Ryūkyū for centuries. Though the majority of Vietnamese cash coins throughout history were copper coins, lead, iron and zinc coins also circulated alongside them often at fluctuating rates. Coins made from metals of lower intrinsic value were introduced because of various superstitions involving Vietnamese people burying cash coins, as the problem of people burying cash coins became too much for the government. Almost all coins issued by government mints tended to be buried mere months after they had entered circulation. The Vietnamese government began issuing coins made from an alloy of zinc, lead, and tin. As these cash coins tended to be very fragile, they would decompose faster if buried, which caused the Vietnamese people to stop burying their coins.
The cash or qian was a type of coin of China and the Sinosphere, used from the 4th century BC until the 20th century AD, characterised by their round outer shape and a square center hole. Originally cast during the Warring States period, these coins continued to be used for the entirety of Imperial China. The last Chinese cash coins were cast in the first year of the Republic of China. Generally most cash coins were made from copper or bronze alloys, with iron, lead, and zinc coins occasionally used less often throughout Chinese history. Rare silver and gold cash coins were also produced. During most of their production, cash coins were cast, but during the late Qing dynasty, machine-struck cash coins began to be made. As the cash coins produced over Chinese history were similar, thousand year old cash coins produced during the Northern Song dynasty continued to circulate as valid currency well into the early twentieth century.
The Yuan dynasty was a Mongol-ruled Chinese dynasty which existed from 1271 to 1368. After the conquest of the Western Xia, Western Liao, and Jin dynasties they allowed for the continuation of locally minted copper currency, as well as allowing for the continued use of previously created and older forms of currency, while they immediately abolished the Jin dynasty's paper money as it suffered heavily from inflation due to the wars with the Mongols. After the conquest of the Song dynasty was completed, the Yuan dynasty started issuing their own copper coins largely based on older Jin dynasty models, though eventually the preferred Yuan currency became the Jiaochao and silver sycees, as coins would eventually fall largely into disuse. Although the Mongols at first preferred to have every banknote backed up by gold and silver, high government expenditures forced the Yuan to create fiat money in order to sustain government spending.
The Kaiyuan Tongbao, sometimes romanised as Kai Yuan Tong Bao or using the archaic Wade-Giles spelling K'ai Yuan T'ung Pao, was a Tang dynasty cash coin that was produced from 621 under the reign of Emperor Gaozu and remained in production for most of the Tang dynasty until 907. The Kaiyuan Tongbao was notably the first cash coin to use the inscription tōng bǎo (通寶) and an era title as opposed to have an inscription based on the weight of the coin as was the case with Ban Liang, Wu Zhu and many other earlier types of Chinese cash coins. The Kaiyuan Tongbao's calligraphy and inscription inspired subsequent Central Asian, Japanese, Korean, Ryūkyūan, and Vietnamese cash coins and became the standard until the last cash coin to use the inscription "通寶" was cast until the early 1940s in French Indochina.
Mother coins, alternatively known as seed coins, matrix coins, or model coins (樣錢), were coins used during the early stages of the casting process to produce Chinese, Japanese, Korean, Ryukyuan, and Vietnamese cash coins. As cash coins were produced using sand casting mother coins were first produced to form the basis for all subsequent cash coins to be released into circulation. Under the Han dynasty in China mints started producing cash coins using bronze master moulds to solve inconsistencies in circulating coins, this only worked partially and by the sixth century mother coins were introduced to solve these inconsistencies almost completely. The Japanese adopted the usage of mother coins in the 600s and they were used to manufacture cast Japanese coins until the Meiji period. The mother coin was initially prepared by engraving a pattern with the legend of the cash coin which had to be manufactured. In the manufacturing process mother coins were used to impress the design in moulds which were made from easily worked metals such as tin and these moulds were then placed in a rectangular frame made from pear wood filled with fine wet sand, possibly mixed with clay, and enhanced with either charcoal or coal dust to allow for the molten metal to smoothly flow through, this frame would act as a layer that separates the two parts of the coin moulds. The mother coin was recovered by the people who cast the coins and was placed on top of the second frame and the aforementioned process was repeated until fifteen layers of moulds had formed based on this single mother coin. After cooling down a "coin tree" (錢樹) or long metallic stick with the freshly minted cash coins attached in the shape of "branches" would be extracted from the mould and these coins could be broken off and if necessary had their square holes chiseled clean, after this the coins were placed on a long metal rod to simultaneously remove the rough edges for hundreds of coins and then these cash coins could be strung together and enter circulation.
The Zhengde Tongbao is a fantasy cash coin, Chinese, and Vietnamese numismatic charm bearing an inscription based on the reign title of the Zhengde Emperor of the Ming dynasty. The Zhengde Emperor reigned from the year 1505 until 1521, however during this period no circulating cash coins were minted. There were a large amount "cash coins" bearing the Zhengde era name are minted from the late Ming to early Qing dynasty periods as superstitious "lucky coins" with auspicious depictions and instructions, as this inscription remained popular for charms modern reproductions of the Zhengde Tongbao are also very common.
The Yongle Tongbao was a Ming dynasty era Chinese cash coin produced under the reign of the Yongle Emperor. As the Ming dynasty didn't produce copper coinage at the time since it predominantly used silver coins and paper money as the main currency, the records vary on when the Yongle Emperor ordered its creation between 1408 and 1410, this was done as the production of traditional cash-style coinage had earlier ceased in 1393. The Yongle Tongbao cash coins were notably not manufactured for the internal Chinese market where silver coinage and paper money would continue to dominate, but were in fact produced to help stimulate international trade as Chinese cash coins were used as a common form of currency throughout South, Southeast, and East Asia.
The Hongwu Tongbao was the first cash coin to bear the reign name of a reigning Ming dynasty Emperor bearing the reign title of the Hongwu Emperor. Hongwu Tongbao cash coins officially replaced the earlier Dazhong Tongbao coins, however the production of the latter did not cease after the Hongwu Tongbao was introduced. The government of the Ming dynasty placed a greater reliance on copper cash coins than the Yuan dynasty ever did, but despite this reliance a nationwide copper shortage caused the production of Hongwu Tongbao cash coins to cease several times eventually leading to their discontinuation in 1393 when they were completely phased out in favour of paper money. In the year 1393 there were a total of 325 furnaces in operation in all provincial mints of China which had an annual output of 189,000 strings of cash coins which was merely 3% of the average annual production during the Northern Song dynasty.
Vault Protector coins were a type of Chinese numismatic charm coins created by Chinese mints. These coins were significantly larger, heavier and thicker than regular cash coins and were well-made as they were designed to occupy a special place within the treasury of the mint. The treasury had a spirit hall for offerings to the gods of the Chinese pantheon, and Vault Protector coins would be hung with red silk and tassels for the Chinese God of Wealth. These coins were believed to have charm-like magical powers that would protect the vault while bringing wealth and fortune to the treasury.
The coinage of the Great Shu Kingdom is the earliest known coinage produced by a peasant revolt in the history of China, the revolt lasted from 993 until 995 and during this period a small number of cash coins were produced by the peasant rebellion using the era names of the rebel leader Li Shun. It was only with the strongest military efforts that the Song dynasty was able to suppress the rebellion and restore their rule over the Shu region. The coinage produced by the Da Shu Kingdom is often rather roughly produced and as the rebellion only lasted a few years not many cash coins were produced leading to them being extremely rare today.
Kangxi Tongbao refers to an inscription used on Chinese cash coins produced during the reign of the Kangxi Emperor of the Manchu-led Qing dynasty. Under the Kangxi Emperor the weights and standards of the brass cash coins changed several times and the bimetallic system of Qing dynasty coinage was established. Today Kangxi Tongbao cash coins are commonly used as charms and amulets where different forms of superstition have developed arounds its mint marks and calligraphy.
Qianlong Tongbao is an inscription used on cash coins produced under the reign of the Qianlong Emperor of the Qing dynasty. Initially the Qianlong Tongbao cash coins were equal to its predecessors in their weight and quality but as expensive military expenditures such as the Ten Great Campaigns began to take their financial toll on the government of the Qing dynasty the quality of these cash coins started to steadily decrease. The weight of the Qianlong Tongbao was changed several times and tin was added to their alloy to both reduce costs and to prevent people from melting down the coins to make utensils. As the intrinsic value of these coins was higher than their nominal value many provincial mints started reporting annual losses and were forced to close down, meanwhile the copper content of the coinage continued to be lowered while the copper mines of China were depleting. The Qianlong era also saw the conquest of Xinjiang and the introduction of cash coins to this new region of the Qing Empire.
Standard cash, or regulation cash coins, is a term used during the Ming and Qing dynasties of China to refer to standard issue copper-alloy cash coins produced in imperial Chinese mints according to weight and composition standards that were fixed by the imperial government. The term was first used for Hongwu Tongbao cash coins following the abolition of large denomination versions of this cash coin series.
"Red cash coins" are the cash coins produced in Xinjiang under Qing rule following the conquest of the Dzungar Khanate by the Qing dynasty in 1757. While in Northern Xinjiang the monetary system of China proper, with standard cash coins, was adopted in Southern Xinjiang where the pūl (ﭘول) coins of Dzungaria circulated earlier, the pūl-system was continued but some of the old Dzungar pūl coins were melted down to make Qianlong Tongbao (乾隆通寶) cash coins. Because pūl coins were usually around 98% copper, they tended to be very red in colour which gave the cash coins based on the pūl coins the nickname "red cash coins".
Iron cash coins are a type of Chinese cash coin that were produced at various times during the monetary history of imperial China as well as in Japan and Vietnam. Iron cash coins were often produced in regions where the supply of copper was insufficient, or as a method of paying for high military expenditures at times of war, as well as for exports at times of trade deficits.
The Zhouyuan Tongbao is a copper-alloy cash coin produced during the reign of Emperor Shizong of the Later Zhou dynasty, a historical Chinese state that existed in the Five Dynasties and Ten Kingdoms period. The design of the Zhouyuan Tongbao cash coins closely resembles that of the Kaiyuan Tongbao (開元通寳) series produced during the earlier Tang dynasty period. The Zhouyuan Tongbao cash coins were produced from recycled Buddhist statues confiscated from Buddhist temples. For this reason the Zhouyuan Tongbao is commonly referred to as "Arhat money" or as the "money that destroyed Buddha". Nicknames only reserved for a handful of Chinese cash coins, as confiscation of Buddhist statues for coin production only happened around 7 times in Chinese history.
Cash coins with flower (rosette) holes are a type of cash coin with an octagonal hole as opposed to a square one, they have a very long history possibly dating back to the first Ban Liang (半兩) cash coins cast under the State of Qin or the Han dynasty. Cash coins are characterised by their round shape and square hole, but Huachuanqian are cash coins with an octagonal hole. These octagonal holes are mostly found in Chinese cash coins, but are in some rare instances also found in Japanese, Korean, and Vietnamese cash coins.
