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Qing Dynasty,
Qianlong Tongbao,
Bao Chuan Bureau
(Large Tong Version)
清
乾隆通寶
寶川局造
(大通版)
Item number: A2771
Year: AD 1736-1739
Material: Brass
Size: 25.3 x 25.4 x 1.1 mm
Weight: 4.0 g
Manufactured by: Bao Chuan Bureau, Chengdu
Provenance: Da Chen Stamps and Coins Collection 2019
This coin was issued during the reign of Emperor Qianlong of the Qing dynasty, minted between AD 1736 and 1739 (Qianlong Years 1 to 4) by the Sichuan Provincial Mint in Chengdu, known as the Baochuan Mint. The coin follows the standard format of 1.2 qian (approximately 4.3 grams) in weight and carried a face value of one wen, commonly referred to as a “xiaopingqian” (small-denomination coin).
The coin conforms to the traditional Han cultural design of a round coin with a square hole. The obverse bears the inscription “Qianlong Tongbao” in regular script Chinese characters, read vertically from top to bottom and right to left. The “乾” character’s “乙” radical is rendered with a shorter upper stroke and a longer lower stroke. The “通” character’s “甬” radical begins with a stroke resembling “マ”, and its walking radical (“辶”) starts with two dots. The “寶” character’s “缶” radical is written as “尔”. None of the four characters connect to the inner square or the rim. The characters “隆” and “通” are linked to the rim, with the “通” character significantly larger than the others, a variation referred to as “large tong” (大通).
The reverse features the Manchu inscription “ᠪᠣᡠ ᠴᡠᠸᠠᠨ”, indicating “Bao” on the left and “Chuan” on the right. The initial stroke of the “Bao” character is angular rather than curved. Neither character connects to the rim, although the “Chuan” character links to the inner square.
The Baochuan Mint was the only provincial mint in Sichuan during the Qing dynasty. Its origins trace back to post-AD 1668, during the Kangxi reign, with the official designation “Baochuan” established in AD 1732 (Yongzheng Year 10). Initially equipped with eight furnaces and operating twenty-four production cycles annually, it was the sole mint in Sichuan authorised by the imperial government. The mint expanded significantly during the Qianlong era, due to increased copper production in Yunnan, and frequently supplied coinage to support military payrolls in Shaanxi, Gansu, and Hubei. In response to fiscal and military pressures, it began minting large-denomination coins such as “ten-wen” and “fifty-wen” during the Xianfeng period and later produced “hundred-wen” coins in the Tongzhi era. In the late Guangxu period, the mint transitioned to mechanised production and was formally dissolved in AD 1905 (Guangxu Year 31), becoming part of the provincial machinery bureau. Thus ended a minting history that had spanned 172 years since the Yongzheng reign. With a large and stable output, self-sufficiency in metallic resources, and its strategic location in southwestern China, the Baochuan Mint played a critical role in maintaining monetary order and supporting fiscal-military governance across the region.
The composition of Qianlong Tongbao coins varied regionally. Between AD 1736 and 1740 (Qianlong Years 1 to 5), the Baofu Mint in Fujian followed Yongzheng-era standards and minted “yellow coins” using a 60:40 ratio of copper to lead (including zinc). In AD 1740 (Qianlong Year 5), due to widespread practises of melting coins for illicit casting of utensils, a new formula was adopted to produce “green coins”: 50% red copper, 41.5% white lead (zinc), 6.5% black lead, and 2% tin. All mints were required to adopt this composition. These green coins were reputed to shatter easily when melted. However, archaeological finds suggest that yellow coins continued to be minted in significant quantities. In AD 1794 (Qianlong Year 59), the green coin standard was abolished, likely due to the widespread dissemination of private recasting techniques, and production of yellow coins resumed.
Emperor Qianlong, personal name Hongli of the Aisin Gioro clan, reigned from AD 1735 to 1796. Alongside the Kangxi and Yongzheng emperors, he epitomised the height of Qing imperial prosperity. He pursued both cultural and military initiatives, compiled the “Complete Library of the Four Treasuries”, suppressed the Dzungar and Muslim uprisings, and expanded the empire to its greatest historical extent. Styling himself as the “Old Man of Ten Perfect Victories”, he placed strong emphasis on Confucian governance and cultural administration. However, his later years were marked by extravagance and growing political corruption, laying the groundwork for the Qing dynasty’s eventual decline.