At a Glance: 1964 Roosevelt Dime — The Last Silver Year
Values in lower grades track silver content closely because the coin is so common that numismatic premium is minimal until you reach XF and above.
90% silver dime
Valuable Roosevelt Dimes Worth Money That Could Be Hiding In Your Change
Some Roosevelt Dimes in circulation are worth far more than their face value due to minting errors, special editions, and unique variations.