The 1917-S Mercury Dime is worth anywhere from $3 in worn condition to over $1,200 in high-grade mint state. Finding one of these beautiful silver coins in your pocket change or an old jar can be an exciting moment for any American household.

Understanding the History and Design of the 1917-S Mercury Dime

The 1917-S Mercury Dime holds a special place in American numismatic history. It was only the second year of the design’s production, and the “S” mint mark indicates it was struck at the San Francisco Mint. While many people call it the Mercury Dime, the figure on the obverse is actually Liberty wearing a winged cap, symbolizing freedom of thought.

If you have discovered one of these pieces, you might be wondering how to tell if yours is a hidden treasure. Using a top coin identifier app can help you quickly confirm the date and mint mark today. The San Francisco Mint produced 27,357,000 of these dimes in 1917. While that sounds like a lot, most were heavily circulated during the early 20th century.

Because these coins are 90% silver, they always have a “melt value” regardless of their condition. However, for collectors, the numismatic value far exceeds the silver price. Using tools like the CoinKnow app can help you keep track of the current market trends for this specific San Francisco issue.

How to Identify the 1917-S Mint Mark and Varieties

To verify the value of your coin, you must first locate the mint mark. On the Mercury Dime, the mint mark is found on the reverse (the back) of the coin. Look near the bottom rim, to the left of the base of the fasces (the bundle of sticks). If you see a small “S,” you have the San Francisco version.

If there is no letter, it was minted in Philadelphia. If there is a “D,” it came from Denver. The “S” mint mark is particularly desirable among collectors who are trying to complete a full set of early Mercury Dimes. When you check the 1917 dime value guide, you will notice that the mint mark plays a significant role in the final price.

Some collectors also look for “Full Bands” (FB) on the reverse. This refers to the horizontal bands holding the fasces together. If they are fully separated and distinct, the coin is much more valuable. You can use the CoinKnow app to compare your coin’s details with high-resolution photos of Full Band examples.

Current Market Value and Price Comparison Table

The value of a 1917-S Mercury Dime depends heavily on its “grade,” which is a measure of how much wear and tear the coin has seen. A coin that looks like it just came from the bank is worth significantly more than one that is smooth and thin.

Below is a breakdown of what you can expect to receive for a 1917-S Mercury Dime across different grading levels. These prices are based on recent auction data and market trends.

Condition Grade	Estimated Market Value
Good (G-4)	$3.50 – $5.00
Very Good (VG-8)	$6.00 – $8.00
Fine (F-12)	$12.00 – $18.00
Very Fine (VF-20)	$25.00 – $40.00
Extremely Fine (XF-40)	$65.00 – $90.00
About Uncirculated (AU-50)	$110.00 – $150.00
Mint State (MS-60)	$220.00 – $300.00
Mint State (MS-65)	$600.00 – $1,200.00+

Determining the Grade of Your 1917-S Mercury Dime

To find the highest 1917-S dime auction prices, the coin must be in Mint State. But how do you know if your coin is “Good” or “Extremely Fine”?

For a “Good” grade, the coin will be very worn, with the tops of the letters in “Liberty” perhaps touching the rim. For a “Fine” grade, you should be able to see some detail in the hair braids around the ear. If the coin is “Extremely Fine,” most of the fine details in the feathers of Liberty’s cap will be visible, though some light wear may be present on the high points.

A “Mint State” coin will have no wear at all and will retain its original “luster”—that frosty, shiny look a coin has when it is first minted. Grading is subjective and takes practice, which is why many casual collectors use the CoinKnow app to get a baseline valuation before sending a coin to a professional grading service like PCGS or NGC.

Factors That Influence the Final Value

Beyond grade and mint mark, several other factors can influence what a dealer or collector is willing to pay for your 1917-S dime. One of the biggest is “eye appeal.” A coin with beautiful natural toning (colors that develop on the silver over time) might sell for more than a plain white coin.

Conversely, damage can significantly lower the value. If the coin has been cleaned, scratched, or holed for jewelry, its value will drop to near its silver melt price, even if the date is rare. Never clean your coins with polish or soap, as this removes the original surface and ruins the value for collectors.

The current price of silver also provides a “floor” for the value. Since this dime contains 0.07234 troy ounces of pure silver, multiply that by the current spot price of silver to see its metal worth. Usually, the collector value of a 1917-S is much higher than this base number.

Frequently Asked Questions

Q: Is the 1917-S Mercury Dime rare?
A: While it is not the rarest in the series (like the 1916-D), it is considered a “semi-key” date in higher grades. Millions were made, but many were lost or worn down over the last century.

Q: What is the silver content of a 1917 Mercury Dime?
A: It is made of 90% silver and 10% copper. This was the standard for American dimes, quarters, and half dollars minted before 1965.

Q: How can I sell my 1917-S Mercury Dime for the best price?
A: First, determine the grade. Then, check recent sales on auction sites or use a dedicated coin value app. Selling to a reputable local coin shop is often faster, but selling at a specialized coin auction may net a higher price for high-grade specimens.

Q: Does a “Full Bands” designation really matter?
A: Yes, for high-grade 1917-S dimes, the Full Bands designation can double or even triple the price. It proves the coin was struck with high pressure and captures every detail of the original design.