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  2. Troy weight - Wikipedia

    en.wikipedia.org/wiki/Troy_weight

    One-troy-ounce (480 gr; 31 g) samples of germanium, iron, aluminium, rhenium and osmium A Good Delivery silver bar weighing 1,000 troy ounces (83 troy pounds; 31 kg) Troy weight is a system of units of mass that originated in the Kingdom of England in the 15th century [ 1 ] and is primarily used in the precious metals industry.

  3. Gold holdings - Wikipedia

    en.wikipedia.org/wiki/Gold_holdings

    The World Gold Council estimates that all the gold ever mined, and that is accounted for, totals 187,200 tonnes, as of 2017 [3] but other independent estimates vary by as much as 20%. [4] At a price of US$1,250 per troy ounce , marked on 16 August 2017, one tonne of gold has a value of approximately US$40.2 million.

  4. Talk:United States Bullion Depository - Wikipedia

    en.wikipedia.org/wiki/Talk:United_States_Bullion...

    Many of the referenced articles discuss gold quantities in dollars. The convention in these articles was to use the statutory rate to translate troy ounces to dollars. I have used these conversion rates to translate back to troy ounces. Before January, 1934 the conversion rate was $20.67/oz. Afterwards It was $35/oz until 1972.

  5. Grain (unit) - Wikipedia

    en.wikipedia.org/wiki/Grain_(unit)

    The original mercantile pound of 25 shillings or 15 (Tower) ounces was displaced by, variously, the pound of the Hanseatic League (16 tower ounces) and by the pound of the then-important wool trade (16 ounces of 437 grains). A new pound of 7,680 grains was inadvertently created as 16 troy ounces, referring to the new troy rather than the old ...

  6. Imperial and US customary measurement systems - Wikipedia

    en.wikipedia.org/wiki/Imperial_and_US_customary...

    The apothecaries and troy pounds are divided into 12 ounces (of 480 grains) while the avoirdupois pound has 16 ounces (of 437.5 grains). The unit of volume, the gallon , has different values in the United States and in the United Kingdom – the US fluid gallon being about 0.83 imperial gallons and the US dry gallon being about 0.97 imperial ...

  7. United States Bullion Depository - Wikipedia

    en.wikipedia.org/wiki/United_States_Bullion...

    The building and early operation of the depository occurred at the same time total gold reserves in the United States experienced unprecedented growth. These reserves, which were 194 million troy ounces (6,019 metric tons) at the end of 1933, jumped to 503 million troy ounces (15,641 metric tons) by the end of 1939.

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  9. Pennyweight - Wikipedia

    en.wikipedia.org/wiki/Pennyweight

    A pennyweight (dwt) is a unit of mass equal to 24 grains, 1 ⁄ 20 of a troy ounce, 1 ⁄ 240 of a troy pound, approximately 0.054857 avoirdupois ounce [1] and exactly 1.55517384 grams. [2] It is abbreviated dwt, d standing for denarius – (an ancient Roman coin), and later used as the symbol of an old British penny (see £sd).