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| 裏面の説明 | The reverse features two Manchu script characters cast in raised relief on either side of the central square hole, reading vertically: 'Boo' (ᠪᠣᠣ) to the left and 'Jin' (ᠵᡳᠨ) to the right, indicating the Baojin (Board of Revenue) mint in Nanjing. The characters are flanked by the inner square rim of the perforation and the outer circular rim. The field is flat and recessed, consistent with standard Qing cast cash manufacture. |
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| 鋳造数 | ND (1729) - Hartill#22.173: Tong with one dot - ND (1730-1731) - Hartill#22.174: Tong with two dots; 1.4 Qian weight - ND (1735) - Hartill#22.175: Tong with two dots; 1.2 Qian weight (large Manchu characters) - |
| 追加情報 |
The Boo-jin mint — the Board of Revenue's Beijing facility — was one of two central government mints operating directly under imperial oversight during the Yongzheng reign, the other being the Board of Works mint. Yongzheng himself was obsessive about administrative efficiency and actively purged corrupt provincial minting operations, consolidating output under tighter central control. The brass alloy mandate introduced under his reign was a deliberate departure from the mixed-metal practices of the Kangxi period.
Hartill 22.173 is among the more frequently encountered Board of Revenue types, though cast quality varies noticeably across the reign's six-year run.