All US Roosevelt dimes made from 1946-1964 are 90% silver and 10% copper, these dimes are worth more than $0.10. Robert Donofrio’s father has a hobby collecting these silver dimes, if he is near a bank he will exchange $400.00 dollars for $400.00 worth of dimes and spend the afternoon sifting through 4,000 dimes. For every $100.00 worth of dimes he will find one silver dime which currently worth $1.99. Check out the current value of a 1946-1964 Roosevelt dime here. Since 1965 Roosevelt dimes are approximately 92% copper and 8% nickel with a value of only $0.02.