What is the value of a double stamped dime?

Answer 1

The value of any coin is based on its condition, date, and mintmark. Improving the question to provide this information would help tremendously. As for the "double-stamped" aspect, this really depends on the details. Many modern coins show signs of what is called "strike doubling," which simply means that the die that hits the coin bounces, causing a shelf-like doubling effect to be seen. This type of doubling is quite common, and adds no extra value for collectors. Older coins, made when dies were hand-tooled or hand-modified, may show signs of a doubled die, where a single die may have more than one image on it. This type of doubling can bring extra value to the coin. A third type of doubling, another false kind, is die breakage, such as what caused the "extra leaf" so-called "errors" on Wisconsin state quarters. Some of these can add collectible value, depending on how common the error is. Finally, there can be a type of double-strike where the coin gets stuck in the press and actually is struck by one or both dies multiple times. These are inherently unique, and can add significant collector's value. You should check with a coin dealer or an expert in error coins to verify whether your particular example is a common error or a valuable one.