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Old 2nd August 2005, 03:35 PM   #10
Battara
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Join Date: Dec 2004
Location: Louisville, KY
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Low grade alloy silver was mainly composed of 60%silver or more and 40%copper or less. The greater the copper content, the darker, harder, and more easily oxidized the metal becomes. Coin silver with 80% silver and 20% copper is harder and darker than, say, sterling silver with 92.5% silver and 7.5% copper (Note: by darker I assume that the metals in question have been cleaned, which, BTW raises the value in this case and makes it look shiny ).
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