You could come here and ask about a specific type of coin to get your answer. A few examples of U.S. coin metal contents are as follows.
Penny (pre-1982): 95% copper, 5% zinc
Penny (1982-present): 97.5% zinc, 2.5% copper
Nickel: 75% copper, 25% nickel
Dime, quarter (1965-present): 91.67% copper, 8.33% nickel
Half dollar, large dollar (1971-present): same as dimes and quarters
Sacagawea/Presidential dollars: 88.5% copper, 6% zinc, 3.5% manganese, 2% nickel
On the "heads" side of US coinage there is a date, that tells you when the coin was made.
They were minted In 2011.
The U.S. Mint has never made a $10 JFK coin of any kind. Take it to coin dealer to find out what it is.
Indian coin is made of stainless steel.
the coin is made up of aluminum bronze its a coin that is no more it was only made till 2002
To find out what year a nickel coin was made, simply look for the year stamped on the coin's face, usually on the front side featuring Thomas Jefferson. The date is located just below the portrait. If you have a nickel from a specific series, you can also research its design features or mint marks to determine its year of production.
the first mercury coin was made in 1916.
This is not a US Mint issue coin it's a novelty coin of some type. It could have value if it's made from silver. Look for the marking of .999 fine silver on the coin. If you find it, it's made of silver and does have some value.
the first coin made was from lydian and had a symbol of a tiger that was made by the kings of the jungles (King Alyattes) in turkey the coin was made out of gold and silver
It is not a coin made in a mint because it has no date on it, but if you want to find out more about it take it to a pawn shop. They will do an acid test on it to see if it's real gold.
That means it is a novelty coin. These are not made by the US mint. They are made by private mints for shops as a token or toy.
Such a coin is not an official mint product and therefore it is impossible to tell what it is made out of. To find out what it is made out of, either go to the manufacturer's website or ask a reputable coin dealer or jeweler to see if it is silver and what purity of silver it is.