Ron Guth: The Roosevelt Dime replaced the Mercury Head Dime in 1946, in honor of the late President legacy and and as part of the on-going trend toward placing historical figures on U.S. coins in place of allegorical figures of Liberty. The new Dime proved to be very popular and the mintage for the first year set a new record for the denomination.
All dates and mintmarks in this series are common in both Mint State and Proof. Major varieties include a 1960 Doubled Die Obverse, a 1963 Doubled Die Reverse, and a 1964-D Doubled Die Reverse.
In 1965, the composition of the Dime was changed from 90% silver to a copper-nickel clad alloy.
Some collectors seek out Roosevelt Dimes that show a strong strike and split bands on the torch (similar to the "Split Bands" on the Mercury Head Dimes). "Full Band" Roosevelt Dimes represent a small portion of the survivign population and they are highly prized by specialist, especially on those dates which are known for being poorly struck.
This series includes the Proof 90% silver Dimes produced by the U.S. Mint from 1992 to date.