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Copper ion systems use an electric current across .500 gm bars (solid copper, or a mixture of copper and .100 gm or silver) to free copper ions into the flow of pool water to kill organisms such as algae in the water and provide a "residual" in the water.
But throughout most of their history, pennies were made up of 95% copper, with the remaining 5% being either zinc or tin. As a result, with only a few wartime exceptions, any penny from 1981 or ...
The typical penny is around 97.5% zinc and only 2.5% copper. Since 1982, copper-plated pennies have been made primarily from zinc. Ironically, the other mainstream coins are primarily made from ...
You can find these pennies ranging from hundreds to thousands on eBay, but one of the pricier coins in mint condition sold for $159,000. 10. 1926-S Lincoln Penny — $149,500
Replacing the copper coinage with bronze was beyond the capacity of the Royal Mint, which was busy with the production of silver coins and gold coins. [37] The Mint put out to tender a contract to strike 1,720 long tons (1,750 t; 1,930 short tons) of the new bronze pennies, halfpennies and farthings.
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A penny, on its face, is worth one cent. $0.01 U.S. dollars. On the other hand, that same penny -- if melted down for the copper it contains -- could be worth quite a bit more.
This leads to the possibility of smelters taking coins and melting them down for the scrap value of the metal. Pre-1992 British pennies were made of 97% copper; but as of 2008, based on the price of copper, the value of a penny from this period is 1.5 new-pence. Modern British pennies are now made of copper-plated steel.