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Gresham's law - Wikipedia, the free encyclopedia
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Pennies pre-1982 = 9 US pennies are very close to 1 ounce (9.145 pennies = 1 ounce).
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If the pennies are after 1982( devalued ) then 11 US pennies are very close to one ounce (11.34 pennies = 1 ounce).
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A nickel weighs 5 grams. 28 grams in an ounce. About 5.6 nickels weigh an ounce.
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USA quarter is clad of two layers of cupronickel (75% Copper, 25% Nickel) on a core of pure copper It currently costs 7.33 cents to produce
The mint did produce some silver quarters in 1992 from the Silver Proof set.
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