Cross-country learning guide
Silver Standards Compared
A source-qualified comparison of nominal weight, fineness, calculated fine silver, and intended role without false precision.
Nominal standardsCalculated valuesToleranceRegional use
- Routes
- 14
- Relationships
- 8
- Ports
- 8
- Status
- Published
No false precision
Nominal standards, object measurements, and calculated values stay distinct
A blank is unavailable, never zero. Only the Mexican Republican row has both cited nominal weight and fineness for a fine-silver calculation in this phase.
| Coin | Issuer | Dates | Weight g | Fineness | Fine silver g | Diameter mm | Role |
|---|---|---|---|---|---|---|---|
| Mexican Republican 8 Reales | Mexican Republic | 1823–1897 | 27.07 | 0.903 | 24.444 | about 38–41; issue variation | Domestic denomination and international trade silver |
| Japanese Trade Yen | Government of Japan | 1875–1877 | 27.216 | — | — | — | Distinct East Asian trade coin |
| Japanese Silver Yen | Government of Japan | 1871–1914 production context | 26.96 | — | — | 37.58 | Treaty-port silver coin; later Taiwan circulation context |
| 1911 Chinese dragon dollar (museum object) | Qing government | 1911 | 26.52 | — | — | 39 | Chinese silver dollar |
| Korean five yang | Joseon government | 1892–1894 reform context | — | — | — | — | Korean silver standard coin |
| Hong Kong silver dollar | Hong Kong government | 1866–1868 mint context | 27.11 | — | — | 38 | Local silver dollar |
Source trail
Institutional and contemporary evidence
Japan MintJapan Mint history of the one-yen coinMinistry of Finance, JapanMinistry of Finance history: Trade YenUnited States Office of the HistorianForeign Relations, 1878: silver, sycee, assays, and exchangeNational Museum of KoreaCoins at the end of the Great Han EmpireUnited States Office of the HistorianForeign Relations, 1878: silver dollars at Chinese portsBritish MuseumMexican 8 reales with Chinese chopmarksBank of Japan Currency MuseumHistorical events and currencies in useBank of Japan Currency MuseumYokohama treaty-port display and the 1859 countermarkNational Museum of Taiwan History1872 Mexican eagle dollar collection recordCentral Bank of the Republic of China (Taiwan) Currency MuseumDevelopment of currency in TaiwanHong Kong Monetary AuthorityMonetary systems in Hong Kong's historyRoyal Mint MuseumBritish Trade Dollar