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| 正面描述 | A detailed high-relief depiction of a section of the Great Wall of China occupies the central field, rendered with fine topographic detail showing battlements, watchtowers, and the wall snaking across rugged mountainous terrain. The Chinese legend 中华人民共和国 (People's Republic of China) arcs across the upper field in bold Chinese characters. The date 1992 appears in the lower exergue in Arabic numerals against a frosted background, contrasting with the mirror-like proof field. |
|---|---|
| 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 | Chinese/Latin |
| 背面铭文 | 登录 以查看详情 |
| 边缘 | 登录 以查看详情 |
| 铸币厂 | 登录 以查看详情 |
| 铸造量 | 登录 以查看详情 |
| 附加信息 |
China's platinum bullion program of the late 1980s and early 1990s was never a commercial priority for the People's Bank — mintages were kept extremely low and distribution outside domestic channels was inconsistent. The 1992 seismograph issue is among the scarcer dates in the series, with reported production figures well under 1,000 pieces.
The instrument honored on this coin was invented by Zhang Heng in 132 AD during the Eastern Han dynasty — the world's first seismoscope, capable of detecting distant earthquakes before any messenger could arrive on horseback.