No such coin exists, 1964 dimes were only made in Philadelphia (no mintmark) or Denver (D mintmark). Both are incredibly common and only worth about $2.25 for their silver scrap value as they are 90% silver.
A proof coin has a retail value of about $1.00
There can't be a 1964-S Roosevelt dime because all coinage at the San Francisco Mint was suspended from 1956 to 1964 inclusive, and they didn't resume use of the S mint mark until 1968. You may be looking at the initials "JS" on the front of the coin - those are the monogram of John Sinnock, who designed the dime. Remember that up till 1964 Roosevelt dimes had their mint marks on the back side of the coin, at the bottom of the torch, and further that Philadelphia coins didn't have mint marks back then. There's more information at the Related Question.
For a 1964 dime, only a "D" mintmark is possible, so many were made that value is just for the silver, about a dollar.
Franklin D. Roosevelt is on the US dime.
The 1969-S dime is a Proof coin, that's why it has higher value.
A proof coin has a retail value of about $1.00
There can't be a 1964-S Roosevelt dime because all coinage at the San Francisco Mint was suspended from 1956 to 1964 inclusive, and they didn't resume use of the S mint mark until 1968. You may be looking at the initials "JS" on the front of the coin - those are the monogram of John Sinnock, who designed the dime. Remember that up till 1964 Roosevelt dimes had their mint marks on the back side of the coin, at the bottom of the torch, and further that Philadelphia coins didn't have mint marks back then. There's more information at the Related Question.
For a 1964 dime, only a "D" mintmark is possible, so many were made that value is just for the silver, about a dollar.
You have a Roosevelt copper-nickel clad Dime. A 1976-S coin in proof condition (PF63) is worth: $2.00.
Franklin D. Roosevelt is on the US dime.
7-27-11>>> All Roosevelt silver dimes (1946-1964) are considered common, most circulated coins are only valued for the silver, about $3.00.
The 1969-S dime is a Proof coin, that's why it has higher value.
dime = 10 cents
Despite being the last year San Francisco minted dimes, its value is only about $1.40 for its silver content.
$8
1951s Dime retail is $1.00-$2.00 depending on the grade
7-27-11>>> All Roosevelt silver dimes (1946-1964) are considered common, most circulated coins are only valued for the silver, about $3.00.