価格を読み込み中…
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».
| コイン | 年代 | 総重量 | 品位 ‰ | 純分 | 溶解価値 |
|---|---|---|---|---|---|
| アメリカン・ゴールド・イーグル 1オンス（50ドル） | Specification in force, 31 U.S.C. §5112 | 33.931 g | 916.7 | 31.104 g | … |
| ソブリン金貨 | Specification of the Coinage Act 1971 (as enacted) | 7.9881 g | 916.7 | 7.322 g | … |
| ブリタニア銀貨 1オンス（2ポンド） | 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.
出典と方法
- 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)
注意：表示額はスポット価格と公開仕様に基づく溶解価値の目安であり、売買の申し出や投資助言ではありません。実物の重量と品位を必ず確認してください。