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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».
| Moneda | Años | Peso bruto | Ley ‰ | Metal fino | Valor de fundición |
|---|---|---|---|---|---|
| American Gold Eagle 1 oz (50 $) | Specification in force, 31 U.S.C. §5112 | 33.931 g | 916.7 | 31.104 g | … |
| Soberano (sovereign) | Specification of the Coinage Act 1971 (as enacted) | 7.9881 g | 916.7 | 7.322 g | … |
| Britannia de plata 1 oz (2 £) | 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.
Fuentes y metodología
- 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)
Aviso: los importes son valores de fundición indicativos calculados con el precio spot y especificaciones publicadas. No son ofertas de compra ni de venta ni asesoramiento financiero. Verifique siempre el peso y la ley de su pieza.