There's no such thing as a copper dime. All 1911 dimes (in fact all dimes up till 1964) were made of a 90%-silver alloy.
It's quite possible your coin is simply an ordinary silver dime with a lot of tarnish. If so, don't try to clean it; that'll reduce its value to a collector.
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What is 1912 dime worth
If it is a US dime, it isn't silver. Silver stopped being used in dimes after 1964, so any dime dated 1965 or later is struck in copper-nickel and are only worth face value.
Exactly 10 cents. This coin is way to new and they were made in the billions.
How much is a 1911 quarter worth
1816 dime
$0.75
The value of a 2006 copper dime varies depending on its condition. In some cases this dime is worth about $0.15 and might be valued at up to about $1.
What is 1912 dime worth
If it is a US dime, it isn't silver. Silver stopped being used in dimes after 1964, so any dime dated 1965 or later is struck in copper-nickel and are only worth face value.
Exactly 10 cents. This coin is way to new and they were made in the billions.
How much is a 1911 quarter worth
1816 dime
A dime is worth 10 pennies. A dime is worth 1/10 of a dollar.
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Dimes dated 1964 are made of 90% silver and are worth about $1.35. Dimes dated 1965 are made of copper-nickel and are worth 10 cents.
Australia does not have a dime coin.
It's just a silver Roosevelt dime worth about a dollar