You may have a lamination flaw, the outer layer of copper nickel was missing when the coin was struck or it could have been dipped in acid, take it to a dealer or collector the weight and thickness will have to be checked to find out. The values for this kind of error vary form $1.00-$10.00
A 1994 US cent is zinc not copper, spend it.
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.
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.
A 1994 US cent is zinc not copper, spend it.
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.
1816 dime
A dime is worth 10 pennies. A dime is worth 1/10 of a dollar.
For the source and detailed information concerning this subject, click on the related links section indicated below.
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.
The gold plating is done by someone other than the U.S. Mint and adds absolutely no numismatic value. It's only worth as much as someone on eBay is willing to pay, but only being a 1994 dime, that won't be much.
Australia does not have a dime coin.