<P> The 1916 - D issue of only 264,000 coins is highly sought after, due largely to the fact that the overwhelming majority of the dimes struck at the Denver Mint in 1916 carried the pre-existing Barber design . Thus, the 1916 - D is worth up to thousands of dollars if it is in relatively fine condition . A considerable number of common 1916 Philadelphia mint dimes have been altered with a "D" added, so buyers should be careful to purchase only from reputable dealers or to accept only sealed and graded coins . Be aware that any dimes that bear the date "1922" are counterfeit . Having possession of a counterfeit coin is illegal and can lead to its forfeiture . </P> <P> Many coins in the "Mercury" series exhibit striking defects, most notably the fact that the line separating the two horizontal bands in the center of the fasces is often missing, in whole or in part; the 1945 issue of the Philadelphia Mint hardly ever appears with this line complete from left to right, and as a result, such coins (designated as "FSB" for "full split bands") are worth more than usual for uncirculated specimens . A valuable variety is an overdate, where 1942 was stamped over a 1941 die at the Philadelphia mint . A less obvious, but still quite valuable, example from the same year is from the Denver mint . </P> <P> Soon after the death of President Franklin D. Roosevelt in 1945, legislation was introduced by Virginia Congressman Ralph H. Daughton that called for the replacement of the Mercury dime with one bearing Roosevelt's image . The dime was chosen to honor Roosevelt partly due to his efforts in the founding of the National Foundation for Infantile Paralysis (later renamed the March of Dimes), which originally raised money for polio research and to aid victims of the disease and their families . </P> <P> Due to the limited amount of time available to design the new coin, the Roosevelt dime was the first regular - issue U.S. coin designed by a Mint employee in more than 40 years . Chief Engraver John R. Sinnock was chosen, as he had already designed a Mint presidential medal of Roosevelt . Sinnock's first design, submitted on October 12, 1945, was rejected, but a subsequent one was accepted on January 6, 1946 . The dime was released to the public on January 30, 1946, which would have been Roosevelt's 64th birthday . Sinnock's design placed his initials ("JS") at the base of Roosevelt's neck, on the coin's obverse . His reverse design elements of a torch, olive branch, and oak branch symbolized, respectively, liberty, peace, and strength . </P>

How much thicker is a dime than a dollar