In 1361 the Minting Department of the Board of Works (寶源局) was set up in Ying Tian Fu (
Nanjing) by
Zhu Yuanzhang who at the time ruled under the title of "Prince of Wu" and created the mint before the
Yuan dynasty was driven out of China. The first cash coins issued by Zhu Yuanzhang actually bore the inscription "
Dazhong Tongbao" (大中通寶) because he wanted to name his country the "Great Zhong dynasty" (大中朝) but eventually the name was settled on the "Great
Ming dynasty" (大明朝) and the Hongwu period was proclaimed and the introduction of the Hongwu Tongbao (洪武通寶). Despite the new coinage being issued the Dazhong Tongbao would continue to be cast as reconquering China from the
Mongols would take several years, one of the reasons why it is confirmed that the production of the Dazhong Tongbao was continued well into the Hongwu period is because Dazhong Tongbao cash coins with mintmarks from
Fuzhou,
Fujian have been produced despite the Fuzhou mint only opening its doors in 1394, other Dazhong Tongbao cash coins without any reverse mint marks are presumed to have been cast in either the
Jiangxi,
Shaanxi,
Sichuan, or
Yunnan mints when these mints were in operation. Mints were established in various cities and provinces including Nanjing,
Beiping,
Henan,
Jinan,
Zhejiang,
Fujian,
Hubei,
Guangdong, and
Guilin. From 1375 each Chinese provincial mint (寶泉局) was required by the government to mark the reverse side of each cash coin with both its value and place of casting. In Jiangxi there were 115 furnaces in operation for the production of cash coins while in provinces where copper was less abundant the government ordered the people to hand in their copper for the production of cash coins. The production of the Hongwu Tongbao cash coins itself was started in the year 1368, bronze cash coins were cast in five denominations which included 1 wén (小平), 2 wén (折二), 3 wén (折三), 5 wén (折五), and 10 wén (當十), however in 1371 the production of larger sized Hongwu Tongbao and Dazhong Tongbao cash coins were discontinued due to the fact that people did not accept them for their
nominal value on the market. Between the years 1375 and 1376 the production of cash coins was completely stopped but was later resumed, however a national shortage of copper forced the government of the Ming dynasty to completely suspend the manufacture of cash coins in 1387 for a period of two years, after the mintage of Chinese cash coins was resumed in 1389 the standard weights were set where copper Hongwu Tongbao coins of 1
wén would weigh 1
qián, 2
wén weighed 2
qián, 3
wén weighed 3
qián, 5
wén weighed 5
qián, and 10
wén weighed 1
liǎng, while in 1390 the weight of the 1
wén Hongwu Tongbao cash coins was increased to 1.2
qián. It was also officially stipulated by law that the Hongwu Tongbao cash coins would be made from 100% copper and that 160 of the 1
qián cash coins would be made from one jin (斤) of copper. The complete production of Chinese copper cash coins was suspended in the year 1393 when the usage of copper coinage was also made illegal in favour of the
Da Ming Baochao banknotes. From this point the government of the Ming dynasty did not produce any copper coinage at a large scale until the
Yongle Tongbao (永樂通寳) was cast for foreign trade between 1408 and 1410, while the production of copper cash coins for domestic circulation did not resume until the introduction of the
Hongzhi Tongbao (弘治通寶) in 1503 by the
Beijing mint.
In Japan In
Japan a large number of imported
Ming dynasty cash coins (明銭) started circulating as
Shichūsen (私鋳銭) from the sixteenth century. On the island of
Kyushu a village named
Kajiki in the
Satsuma Domain produced a large quantity of cash coins between the late sixteenth and early seventeenth centuries as Satsuma had a very active trade with the
Ryukyu Kingdom, these imitations of Ming dynasty cash coins bore the inscription "Kōbu Tsūhō" but had the
Kanji character "治" (Ji) on its reverse to indicate that it was struck in Kajiki. == Mint marks ==