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| 正面描述 | Cast copper cash coin of typical East Asian square-holed round form, bearing a four-character reign legend in Chinese kaishu (regular script) disposed clockwise around a central square perforation. The characters 貞, 觀, 永, and 寳 are arranged in the four cardinal positions — top, right, bottom, and left respectively — each framed between the inner square rim and the outer circular rim. The raised legends are rendered in bold relief against a flat field, with the stroke weight and foot details varying by die variety as documented in DHJ nos. 1.55–1.58. The coin exhibits a deeply patinated dark olive-brown and verdigris surface consistent with prolonged burial, typical of Heian-period coinage. |
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| 正面文字 | 登录 以查看详情 |
| 正面铭文 | 登录 以查看详情 |
| 背面描述 | 登录 以查看详情 |
| 背面文字 | 登录 以查看详情 |
| 背面铭文 | 登录 以查看详情 |
| 边缘 | 登录 以查看详情 |
| 铸币厂 | Imperial Mint, Heian-kyō |
| 铸造量 | ND (870-890) - DHJ# 1.55; large characters - ND (870-890) - DHJ# 1.56; 貞 and 寳 have short feet - ND (870-890) - DHJ# 1.57; wide 貞 with spread feet - ND (870-890) - DHJ# 1.58; small 貞 - |
| 附加信息 | 登录 以查看详情 |