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How to calculate the melt value of a gold or silver coin

Formula: gross weight × fineness = fine weight; fine weight × price per gram = melt value. Live examples from U.S. and U.K. statutes.

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Melt value is what the pure gold or silver in a coin is worth at the spot price.

  1. Fine weight = gross weight (g) × fineness (‰ / 1000).
  2. Value = fine weight (g) × spot price per gram.
  3. 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».

عملةالسنواتالوزن الإجماليالنقاء ‰المعدن الصافيقيمة الصهر
النسر الذهبي الأمريكي 1 أونصة (50 $)Specification in force, 31 U.S.C. §511233.931 g916.731.104 g…
سيفرن (Sovereign)Specification of the Coinage Act 1971 (as enacted)7.9881 g916.77.322 g…
بريتانيا فضة 1 أونصة (2 £)Proclaimed Britannia silver standard (2009 Gazette)32.454 g958.431.104 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.

المصادر والمنهجية

  1. 31 U.S.C. §5112 (govinfo.gov)
  2. Coinage Act 1971, Schedule 1 (as enacted) – OGL v3.0
  3. London Gazette Britannia proclamation 2009 – OGL v3.0
  4. gold-api.com – FAQ (troy-ounce prices)

تنبيه: المبالغ هي قيم صهر إرشادية من سعر السوق والمواصفات المنشورة. ليست عروض شراء/بيع ولا نصيحة مالية. تحقق دائمًا من وزن قطعتك ونقاوتها.