The 1918-S Standing Liberty Quarter is worth anywhere from $25 in heavily worn condition to over $15,000 in pristine mint state. This San Francisco minted classic is a favorite among American families who discover old stashes of silver coins and wonder if they have found a small fortune hiding in a jar.

Condition Grade	Estimated Market Value
Good (G-4)	$25 – $35
Fine (F-12)	$65 – $85
Extremely Fine (XF-40)	$150 – $220
Uncirculated (MS-63)	$550 – $800
Mint State Full Head (MS-65 FH)	$3,500+

History and Significance of the 1918-S Quarter

If you have found a 1918-S silver quarter, you are holding a piece of American history from the final year of World War I. This series, designed by Hermon Atkins MacNeil, is widely considered one of the most beautiful designs ever issued by the U.S. Mint. However, for a beginner, knowing exactly what you have is the first step. To ensure you aren’t missing a rare variety, we recommend using a top coin identifier app to instantly confirm your coin’s mint mark and date.

The “S” mint mark on this 1918 coin indicates it was produced at the San Francisco Mint. During this era, the San Francisco facility was known for producing fewer coins than Philadelphia, which often makes “S” marked coins more desirable to collectors. The design features Lady Liberty stepping through a gateway, holding a shield and an olive branch. The reverse features a majestic eagle in flight.

Interestingly, many people use the CoinKnow app to scan these coins because the dates on Standing Liberty Quarters were notoriously “weak.” On the 1918 series, the date was raised above the rim, meaning it was the first thing to wear away as the coin circulated in pockets. If your coin has a clear, readable “1918” and an “S” next to the star on the left of the date, you have a valuable specimen.

Determining the 1918-S Standing Liberty Quarter Value

The market price for a 1918-S quarter depends heavily on its “grade” or physical condition. Because these coins are made of 90% silver, they have an inherent “melt value,” but the numismatic (collector) value far exceeds the silver weight. Most 1918-S quarters found today are quite worn, often graded as “Good” or “Very Good.” In these conditions, the coin is still worth a significant premium over its face value.

For those looking for high-end investment pieces, the 1918-S Standing Liberty Quarter price guide for MS grades shows that coins with original mint luster can sell for thousands. Collectors specifically look for the “Full Head” (FH) designation, which means the details of Liberty’s hair and helmet are perfectly crisp.

If you are unsure whether your coin is a regular strike or a high-grade gem, tools like CoinKnow can help you compare your coin against high-resolution images. Professional grading can be expensive, so using an app to get a “ballpark” estimate first is a smart move for the everyday coin hunter.

Condition	Description	Estimated Value
About Uncirculated (AU)	Slight wear on the highest points like the knee and breast.	$250 – $450
Choice Mint State (MS-65)	No wear, strong luster, few distracting marks.	$1,800 – $2,500
Full Head Gem (MS-66 FH)	Exceptional strike with full hair/helmet detail.	$12,000+

Identifying the S Mint Mark and Full Head Details

To find the mint mark on a 1918 quarter, look at the bottom left of the coin, just to the left of the date. You will see a small “S” if it was minted in San Francisco. If there is no letter there, it was minted in Philadelphia. If there is a “D,” it came from Denver. The 1918-S is more valuable than the Philadelphia version in almost every grade.

The “Full Head” (FH) designation is the “Holy Grail” for Standing Liberty Quarter collectors. Because the dies used in 1918 often failed to strike the details fully, most 1918-S quarters have a “flat” head. A coin that exhibits full detail on Liberty’s ear and the hairline will command a massive price hike. For example, a standard MS-64 might sell for $700, while an MS-64 FH could easily clear $3,000.

Casual collectors often check Standing Liberty Quarter value info and rarity charts to see how their San Francisco strike compares to other years. In the 1918 series, the San Francisco mint produced roughly 11 million quarters, which sounds like a lot, but very few survived in high grades without being worn down in the booming post-war economy.

Key Varieties: The 1918-S 8 Over 7 Overstrike

While the standard 1918-S is valuable, there is a legendary “error” variety that every coin hunter should look for: the 1918/7-S overdate. This occurred when a 1917 die was mistakenly hubbed with a 1918 die. You can see the remnants of a “7” underneath the “8” in the date. This is one of the most famous and expensive errors in the entire Standing Liberty series.

If you think you see a “7” poking out from behind the “8,” you aren’t just looking at a $50 coin—you are looking at a coin worth thousands even in poor condition. In some cases, a 1918/7-S in high grade has sold for over $100,000. This is why the CoinKnow app’s magnification features are so helpful for everyday Americans who might have a fortune sitting in their change jar without realizing it.

Variety Type	Grade G-4 Value	Grade XF-40 Value
Standard 1918-S	$25	$180
1918/7-S Overdate	$1,500	$12,000

Tips for Selling Your 1918-S Quarter

Once you’ve identified your coin and estimated its value, the next step is deciding what to do with it. If the coin is heavily worn and worth around $25, you might find a local coin shop willing to buy it for a fair price. However, if the date is crisp and Liberty’s shield still shows details, you should consider professional authentication through services like PCGS or NGC.

Avoid cleaning your coins! This is the most common mistake made by non-collectors. Wiping a 1918-S quarter with a cloth or using silver polish creates tiny scratches that can destroy up to 90% of its collector value. Collectors prefer “original skin,” which is the natural patina or toning the coin has developed over the last century.

If you are unsure of the next steps, utilize modern resources. By using CoinKnow, you can join a community of enthusiasts and experts who can guide you on whether your coin is worth the $50 fee for professional grading. Always remember that a certified coin sells for much more on the open market than an “unprocessed” one found in an attic.

The Future of Standing Liberty Quarter Values

As silver prices fluctuate and more collectors enter the hobby, the value of the 1918-S Standing Liberty Quarter remains remarkably stable. These coins are no longer being found in circulation (you won’t find one in your 2024 pocket change), so the supply is fixed. Every year, more worn specimens are lost or damaged, making the surviving “high-grade” examples even rarer.

Investment-grade 1918-S quarters have seen a steady upward trend over the last decade. While common “junk silver” quarters might move based on the price of bullion, the 1918-S is a numismatic staple. Whether you are a casual hobbyist or someone who just inherited a collection, keeping this coin safe in a PVC-free plastic holder is a wise move for the long term.

Year Range	Average Value (Fine-12)	Market Trend
2010	$45	Stable
2015	$55	Increasing
2024	$75	Strong Demand

FAQ

Q: Why is the date so hard to see on my 1918-S quarter?

A: In the original design used from 1916 to 1924, the date was positioned on a raised pedestal. This caused the date to rub off quickly as the coins circulated. The Mint eventually recessed the date in 1925 to fix this problem. A 1918-S with a bold, clear date is considered highly desirable for this reason.

Q: Is every 1918-S quarter made of silver?

A: Yes, all Standing Liberty Quarters minted between 1916 and 1930 are composed of 90% silver and 10% copper. They contain approximately 0.1808 troy ounces of pure silver.

Q: Where did the mint mark go?

A: The mint mark on a 1918-S quarter is located on the obverse (front) of the coin. It is positioned just to the left of the date and above the star. If you see an “S,” it’s from San Francisco; if it’s blank, it’s from Philadelphia; and a “D” means Denver.

Q: Should I get my 1918-S quarter graded?

A: If you believe your coin is in “Uncirculated” condition or if you suspect it is the 1918/7-S overdate variety, you should absolutely have it graded by PCGS or NGC. For heavily worn coins worth under $50, the cost of grading usually exceeds the value it adds.