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2. How to invest in copper? 5 ways to buy and sell it - AOL

   www.aol.com/finance/invest-copper-5-ways-buy...

   1. Copper bullion. You can purchase copper bullion just as you would gold bullion, buying it as coins or even bars. You’ll have the enjoyment of holding it and looking at it, but this form of ...

3. Bullion - Wikipedia

   en.wikipedia.org/wiki/Bullion

   Bullion. Bullion is non-ferrous metal that has been refined to a high standard of elemental purity. The term is ordinarily applied to bulk metal used in the production of coins and especially to precious metals such as gold and silver. It comes from the Anglo-Norman term for a melting-house where metal was refined, and earlier from French ...

4. Coinage metals - Wikipedia

   en.wikipedia.org/wiki/Coinage_metals

   Gold, silver and bronze or copper were the principal coinage metals of the ancient world, the medieval period and into the late modern period when the diversity of coinage metals increased. Coins are often made from more than one metal, either using alloys, coatings (cladding / plating) or bimetallic configurations.

5. Group 11 element - Wikipedia

   en.wikipedia.org/wiki/Group_11_element

   Group 11, by modern IUPAC numbering, [1] is a group of chemical elements in the periodic table, consisting of copper (Cu), silver (Ag), gold (Au), and roentgenium (Rg), although no chemical experiments have yet been carried out to confirm that roentgenium behaves like the heavier homologue to gold. Group 11 is also known as the coinage metals ...

6. Double Your Money Selling Old Pennies by the Pound

   www.aol.com/news/2012-12-05-copper-pennies-old...

   Currently, auctions are asking between $2 and $3 per pound for quantities of 10 to 25 pounds of coins. One auction featured 100,000 pennies -- weighing about 680 pounds -- that sold for $1,500 ...

7. List of named alloys - Wikipedia

   en.wikipedia.org/wiki/List_of_named_alloys

   Corinthian bronze (gold, silver) Cunife (nickel, iron) Cupronickel (nickel) CuSil (silver) Cymbal alloys (tin) Devarda's alloy (aluminium, zinc) Hepatizon (gold, silver) Manganin (manganese, nickel) Melchior (nickel); high corrosion resistance, used in marine applications in condenser tubes.