Mercury Dimes: Key Dates, Full Bands, and What They’re Worth

Mercury dimes (1916 to 1945) are 90% silver. Learn the key dates like the 1916-D, the 1942/1 overdate, and what Full Bands means.

The Mercury dime is one of the most beautiful small coins the U.S. ever made, and it’s one of the most common silver coins in old collections. Every Mercury dime has silver value, and a few dates are worth a lot more.

1943-D Mercury dime, front, showing Liberty in a winged cap
The Mercury dime’s official name is the Winged Liberty Head dime.

Why “Mercury”?

The coin’s official name is the Winged Liberty Head dime. It shows Liberty wearing a winged cap, meant to represent freedom of thought. People thought she looked like the Roman god Mercury, and the nickname stuck. The design is by Adolph A. Weinman, who also designed the Walking Liberty half dollar.

The Basics

  • Made from 1916 to 1945
  • 90% silver, about 0.07 troy ounces of pure silver each
  • Struck at Philadelphia (no mint mark), Denver (D), and San Francisco (S)
  • The mint mark is on the back, at the bottom left, next to the bundle of rods (fasces)

Key Dates to Look For

  • 1916-D: The key to the series. Only 264,000 were made in Denver. Also one of the most faked, often by adding a D to a regular 1916.
  • 1921 and 1921-D: Low-mintage dates and scarce in any condition.
  • 1942/1 and 1942/1-D overdates: The die was made with a 1942 punched over a 1941, and you can see the 1 under the 2. Valuable varieties.
  • 1926-S and 1931-D: Lower-mintage semi-key dates.
1943-D Mercury dime, back, showing the fasces and the D mint mark
The mint mark is at the lower left of the bundle of rods. Full Bands means the center bands are fully split.

What “Full Bands” Means

On the back of the coin, the bundle of rods is tied with horizontal bands. On well-struck coins, the center bands are fully split, with a clear separation. Graders call these Full Bands (FB, or FSB for “full split bands”).

For uncirculated Mercury dimes, Full Bands can make a big difference in value, sometimes more than the date itself. It doesn’t apply to worn coins, since the bands wear away.

What Common Dates Are Worth

Most Mercury dimes, especially the 1940s dates, are common. Worn ones trade mostly for their silver content. Uncirculated common dates bring a premium, and uncirculated coins with Full Bands bring more. See my junk silver guide for how silver coins are valued.

Don’t Clean Them

Mercury dimes often tone beautifully over time, sometimes with rings of color. Cleaning removes that and lowers the value.

The Bottom Line

Every Mercury dime is 90% silver. Check for the key dates (1916-D, 1921, 1921-D, and the 1942/1 overdates), and if you have bright, uncirculated coins, take a close look at the bands on the back.

Have Mercury dimes? JoCo Coin Shop offers honest, no-obligation appraisals across the Kansas City area. Contact me by phone, text, or email to get started.

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