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2. Doré bar - Wikipedia

   en.wikipedia.org/wiki/Doré_bar

   Doré bar. A doré bar is a semi-pure alloy of gold and silver. It is usually created at the site of a mine and then transported to a refinery for further purification. The proportions of silver and gold can vary widely. Doré bars weigh as much as 25 kg. During the 19th century gold rushes, gold nuggets and dust were melted into crude gold ...

3. Silver as an investment - Wikipedia

   en.wikipedia.org/wiki/Silver_as_an_investment

   Silver bars can either be cast or poured, or minted; both categories often involve the production of bars with intricate decorative designs that are attractive to collectors, often referred to as "art bars". Various sizes of silver bars are 1, 10, 100 and 1,000 troy ounces, 100 gram (3.215 troy ounces) and one kilogram (32.15 troy ounces), as ...

4. Nadir - Wikipedia

   en.wikipedia.org/wiki/Nadir

   Nadir also refers to the downward-facing viewing geometry of an orbiting satellite, [2] such as is employed during remote sensing of the atmosphere, as well as when an astronaut faces the Earth while performing a spacewalk. A nadir image is a satellite image or aerial photo of the Earth taken vertically. A satellite ground track represents its ...

5. Good Delivery - Wikipedia

   en.wikipedia.org/wiki/Good_Delivery

   Good Delivery gold bar weighing 12.4 kilograms (400 ozt)) Good Delivery silver bar weighing 31.1 kilograms (1,000 ozt) The Good Delivery specification is a set of rules issued by the London Bullion Market Association (LBMA) describing the physical characteristics of gold and silver bars used in settlement in the wholesale London bullion market. [1]

6. Silver standards - Wikipedia

   en.wikipedia.org/wiki/Silver_standards

   The Scandinavian silver alloy contains 83% pure silver and 17% copper or other metals. [10] German silver will be marked with a millesimal fineness of 800 or 835 (80% or 83.5% pure silver). Any items simply marked "German silver", "nickel silver" or "Alpaca" have no silver content at all, but are mere alloys of other base metals. [citation needed]

7. American Silver Eagle - Wikipedia

   en.wikipedia.org/wiki/American_Silver_Eagle

   The American Silver Eagle is the official silver bullion coin of the United States. It was first released by the United States Mint on November 24, 1986, and portrays the Goddess of Liberty in a design by Adolph A. Weinman that was originally used on the Walking Liberty half dollar from 1916 to 1947. The American Silver Eagle is struck only in ...