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| 背面描述 | Plain reverse field featuring a central square perforation with a raised inner rim. A single auspicious cloud motif is cast in relief above the square hole in the upper field, serving as a mint or workshop mark distinctive to this emission. The outer rim is raised and well-defined, with the remainder of the field left unadorned. |
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| 铸币厂 | 登录 以查看详情 |
| 铸造量 | ND (758-759) |
| 附加信息 |
Qianyuan Zhongbao was introduced in 758 under Emperor Suzong as a forced-value coin, officially tariffed at 10 cash but containing nowhere near ten times the metal of a single Kaiyuan tongbao. The scheme was an emergency fiscal measure to fund the ongoing campaign to retake Chang'an and Luoyang from An Lushan's rebel forces. Within a year, rampant counterfeiting and public resistance forced the court to abandon the 10-cash valuation entirely.
The "cloud" variety — a small cloud-form mark in the reverse field — is one of several mint or workshop control marks documented on this type. Hartill distinguishes it precisely because unmarked and marked pieces almost certainly originate from different casting locations operating simultaneously under wartime pressure.