Look on the back of the coin to see if there's a small mint mark letter. It may be blank or there may be an O.
Numismedia lists the following approximate retail values as of 07/2010:
No mint mark (Philadelphia):
Very worn condition - $13
Moderately worn - $18
Slightly worn - $30
Almost no wear - $193
Uncirculated - $390 to $4,940 depending on quality
"O" mint mark (New Orleans):
Very worn - $16
Moderately worn - $58
Slightly worn - $127
Almost no wear - $848
Uncirculated - $2,640 to $6,440
The value of a US dime marked "ten centavos" is zero, since it is a fake. A real US dime is marked "one dime," not "ten centavos."
The Liberty Seated Dime (1837-1891)
a 1917 us dime is called a mercury dime. its not that rare so it is worth about a dollar
Face value only.
Value is $20.00-$30.00 in average condition
what is the value for an American 1909 silver dime
The value of a US dime marked "ten centavos" is zero, since it is a fake. A real US dime is marked "one dime," not "ten centavos."
The Liberty Seated Dime (1837-1891)
a 1917 us dime is called a mercury dime. its not that rare so it is worth about a dollar
A 1988 dime is worth 10 cents.
Face value only.
10 cents
10c
Value is $20.00-$30.00 in average condition
The US discontinued its half-dime denomination in 1873.
The 1965 dime is a Roosevelt dime. This dime does not carry a mint mark and there were 1,652, 140,000 of them minted in the U.S. They have a value of between 10 cents and 2 dollars.
A US dime dated 1944 is a Mercury head dime, it's very common with a value of $2.00 just for the silver.