It depends on when it was minted. Modern dimes don't contain any silver, but up till 1964 all US dimes were made of an alloy of 90% silver and 10% copper.
When the price of silver shot up in the 1960s the Mint was forced to remove silver from circulating coins, so all circulating dimes and quarters dated 1965 and later, and halves and dollars dated 1971 and later, have no silver in them.
All US dimes until 1965 were struck in 90% silver.
Easy. Hold it in your hand - all US dimes dated 1964 and earlier are made of 90% silver and 10% copper.
It is 90% silver and contains a little over 2 grams of silver.
All US silver coinage has the same composition of .900 silver & .100 copper. Pure silver coins are impractical for every day use they will bend an wear down to fast.
If it is a US dime, quarter or half dollar dated 1964 or earlier, it is silver. If it is a US half dollar dated 1965-1970 it is 40% silver, if it is a US nickel from 1942-1945 AND has a large mint-mark (either a P, D or S) over the Monticello it is 35% silver.There are some US proof coinage in modern years that are silver, but those should be in a protective mint case and should say US silver proof set.
There is no silver in a 1990 US dime.
No, no US dimes dated 1976 contain any silver at all.
If the coin has any wear the value is for the silver, about $2.00
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.
If it's a US dime dated 1964 or before it's silver
1964 was the last year US dimes for general circulation had silver in them however, the silver dime lives on in the silver proof set series issued by the US Mint.
what is the value for an American 1909 silver dime
Nothing. There is no such thing. The most silver any dime has is 90%. This is most likely what you have.
It's metallic silver
For the answer, visit: http://www.coinflation.com/coins/1946-1964-Silver-Roosevelt-Dime-Value.html
A circulated 1939 US dime is worth about $2.70. An uncirculated US 1939 dime is worth between $9.00 and $20.00.
A US dime dated 1944 is a Mercury head dime, it's very common with a value of $2.00 just for the silver.