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Mercury Dime Key Dates - Mercury Keys List

List of the Key Dates in the Mercury Dime Series

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Mercury Dime

Mercury Dime in average circulated condition (obverse side)

Photo by Susan Headley
The key dates in the Mercury Dime series are as follows:
  • 1916-D - With a mintage of only 264,000 this is by far the rarest Mercury key


  • 1942/1 (2 over 1 date) - Overdate type for both 1942 and 1942-D, mintages are unknown but the type is extremely rare

Semi-key (scarce) dates in the Mercury Dime series include:
  • 1921
  • 1921-D
  • 1926-S
  • 1931-S
  • 1931-S
You can find our how much your dimes are worth if you sold them to a coin dealer today by checking my Mercury Dime Values Guide.

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