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Melt value is what the pure gold or silver in a coin is worth at the spot price.
- Fine weight = gross weight (g) × fineness (‰ / 1000).
- Value = fine weight (g) × spot price per gram.
- 1 troy ounce = 31.1034768 g; price per gram = price per ounce ÷ 31.1034768.
Spot now: gold …/g, silver …/g, platinum …/g.
When the statute declares fine content
Some laws state fine content directly. U.S. law says the $50 American Gold Eagle «contains one troy ounce of fine gold». We then use 1 troy ounce of fine gold. The London Gazette Britannia silver proclamation states 32.454 g at 958.4‰ with «ONE OUNCE FINE SILVER».
| 钱币 | 年份 | 毛重 | 成色 ‰ | 纯金属 | 熔炼价值 |
|---|---|---|---|---|---|
| 美国黄金鹰币 1 盎司（50 美元） | Specification in force, 31 U.S.C. §5112 | 33.931 g | 916.7 | 31.104 g | … |
| 主权金币（Sovereign） | Specification of the Coinage Act 1971 (as enacted) | 7.9881 g | 916.7 | 7.322 g | … |
| 不列颠尼亚银币 1 盎司（2 英镑） | Proclaimed Britannia silver standard (2009 Gazette) | 32.454 g | 958.4 | 31.104 g | … |
Melt value ≠ buy or sell price
Dealers sell above spot and buy below. Rare coins can be worth far more as collectibles. Values on this site are indicative and are not offers to buy or sell.
来源与方法
- 31 U.S.C. §5112 (govinfo.gov)
- Coinage Act 1971, Schedule 1 (as enacted) – OGL v3.0
- London Gazette Britannia proclamation 2009 – OGL v3.0
- gold-api.com – FAQ (troy-ounce prices)
声明：金额为根据现货价与已公布规格估算的熔炼参考值，并非买卖报价或理财建议。请务必核对手中钱币的重量与成色。