You may have seen the d dime errors in your coin collection. The common cause is the minting process. The 1982 coins did not have the Philadelphia Mint mintmark on them. Minted in 1982, this type of coin is still relatively new. Mintmarks were still punched manually onto working dies. This process was prone to error on two separate occasions, and one of the causes was human error. However, you can avoid these errors by learning about the different causes of 1984 d dime errors.
A poorly-graded coin may be worth a much lower price than one in good condition. For example, a 1985-D dime may be worth $5.40, while a pristine 1984-D dime could fetch as much as $18 in a coin auction. For a high-grade coin, you can search for a coin grader. If you are unsure of the grade of your coin, you can look up its melt value.
Proof dimes with mint mark issues are also valuable. Proofs with this error can fetch $1,500 or even higher. Moreover, a proof dime from 1983S will realize a price in excess of $1,500. For example, a 1982P dime is missing the P mint mark, but is otherwise in good condition. Another example of a d dime error is a 1964D, which exhibits a double die striking on the reverse side. This is known as the Double Die Reverse Error.