The 1917-S Reverse Walking Liberty Half Dollar is worth anywhere from $25 in worn condition to over $30,000 in pristine mint state. This iconic silver coin is a favorite among collectors because of its unique mint mark placement and the breathtaking “Walking Liberty” design that captures the spirit of early 20th-century America.

Condition	Estimated Value
Good (G-4)	$25 – $35
Fine (F-12)	$65 – $85
Extremely Fine (XF-45)	$280 – $350
Uncirculated (MS-63)	$1,800 – $2,500
Gem Mint (MS-65+)	$15,000+

Understanding the 1917-S Reverse Mint Mark Value

If you’ve recently inherited a coffee can full of old change or found a shiny silver half dollar in an old desk drawer, you might be holding a small fortune. The 1917-S Reverse Walking Liberty Half Dollar is particularly special because of where the San Francisco “S” mint mark is located. To verify what you have, you can use a top coin identifier app to snap a photo and confirm the variety. In early 1917, the Mint moved the mint mark from the obverse (the heads side) to the reverse (the tails side).

This change makes the “Reverse” version distinct from the “Obverse” version struck earlier that same year. For many everyday Americans, these coins represent a tangible piece of history. The Walking Liberty series, designed by Adolph A. Weinman, is widely considered the most beautiful silver coin ever minted by the United States.

The value of your coin is heavily dependent on how much wear and tear it has seen over the last century. If the eagle’s feathers on the back are sharp and Liberty’s dress lines are clear, you are looking at a high-value item. If you aren’t sure where to start, the CoinKnow app is an excellent resource for hobbyists to get instant estimations based on current market trends.

Differentiating Between 1917-S Obverse and Reverse Varieties

It is crucial to look at both sides of your 1917 half dollar. During the first few months of 1917, the “S” for San Francisco was placed on the front, right below the motto “In God We Trust.” Later in the year, officials decided it looked better on the back, near the bottom left rim. The 1917-S Reverse variety is generally more common than the Obverse variety, but it still commands a significant premium over its silver melt value.

Even in “Junk Silver” condition—meaning it is heavily worn—a 1917-S Reverse is still worth significantly more than its weight in silver. While a common 1940s half dollar might only be worth $10, a 1917-S starts at roughly $25 due to its scarcity. If you want to see detailed price breakdowns, checking the 1917 half dollar value guide can give you a better idea of how the San Francisco strikes compare to Philadelphia or Denver issues.

When evaluating your coin, pay attention to the “L” in Liberty. On heavily worn coins, this letter often merges with the rim. If your coin still has a distinct “L” and visible thumb lines on Liberty’s hand, you likely have a “Fine” grade or better, which doubles the price immediately.

Mint Mark Location	Rarity Level	Avg. Circulated Price
1917-S (Obverse)	Scarcce	$50 – $150
1917-S (Reverse)	Common/Moderate	$25 – $80

Pricing for Circulated vs. Uncirculated 1917 Half Dollars

Most Americans will find “circulated” coins—those that were actually used at grocery stores or banks in the 1920s. These coins have rounded edges and flat surfaces. However, if you find one that looks like it just came from the bank, with a “frosty” or “satiny” luster, you have hit the jackpot. Uncirculated coins from 1917 are incredibly rare because few people thought to save them during the hardships surrounding World War I.

Professional grading services like PCGS or NGC use a 70-point scale. A 1917-S Reverse in MS65 (Mint State 65) can sell at major auctions for life-changing sums of money. For those looking for the latest auction records, you can view the 1917-S Walking Liberty Half Dollar price charts to see what professional collectors are currently paying.

Because the jump from $300 to $3,000 can depend on a few tiny scratches invisible to the naked eye, using a magnifying glass is essential. Look for “contact marks” on Liberty’s face or the eagle’s breast. If the surfaces are clean, the CoinKnow app can help you determine if it is worth the $50 fee to send your coin in for professional authentication.

The Silver Content and Investment Potential

Every 1917-S Walking Liberty Half Dollar is made of 90% silver and 10% copper. This means that even if the coin is incredibly damaged, it still has “intrinsic value.” The weight of a standard half dollar is 12.5 grams, and it contains 0.36169 ounces of pure silver. Therefore, your coin will always be worth at least the current market price of silver.

However, the 1917-S Reverse is a “numismatic” coin, meaning its collector value far exceeds its metal value. Investors often buy these early dates because they tend to hold their value better than newer coins during economic downturns. As more people enter the coin-collecting hobby, the demand for “Key Date” or early-date San Francisco strikes continues to rise.

Keeping your coin in a protective flip or plastic holder is vital. Fingerprint oils contain acids that can permanently stain silver over time. If you think you’ve found a high-grade example, avoid cleaning it! Washing a coin with soap or rubbing it with a cloth can destroy its value by 50% or more, as collectors prefer natural patina over a scrubbed, shiny look.

Metal Component	Percentage	Weight (Grams)
Pure Silver	90%	11.25g
Copper Alloy	10%	1.25g

Key Factors That Influence the 1917-S Market Value

When you are trying to sell your 1917-S Reverse, several factors beyond the date will influence the price a dealer offers you. First is the “eye appeal.” Does the coin have beautiful rainbow toning, or is it a dull, dark grey? Toned coins often catch a higher price at auction. Second is the strike quality. Sometimes, the San Francisco mint struck coins with “mushy” details because the dies were worn out.

Another factor is market demand. The Walking Liberty series is one of the most popular in the world. This means there is always a buyer for a 1917-S, unlike obscure foreign coins or modern tokens. To stay updated on whether prices are rising or falling, the CoinKnow mobile app provides a real-time feed of recent sales from eBay and major auction houses.

Finally, consider the origin of the coin. If it was found in a “mint set” or an old collection, it likely hasn’t been “cleaned.” Dealers can spot a cleaned coin instantly—it will have hairline scratches and an unnatural shine. A “raw” (unauthenticated) 1917-S Reverse that looks original will always sell faster than one that looks like it was polished with silver cleaner.

Feature	Impact on Price
Full Breast Feathers	Increases value significantly
Heavy Scratches	Decreases value by 40-60%
Rainbow Toning	Adds 10-20% collector premium

Frequently Asked Questions

### Q: Where exactly is the “S” mint mark on the 1917-S Reverse?

A: Turn the coin to the back side (the eagle side). Look at the bottom left area, near the rim, below the eagle’s wing and the pine branch. You will see a small “S” stamped there.

### Q: Is it worth getting my 1917-S Reverse Half Dollar graded?

A: It depends on the condition. If your coin has a lot of detail and looks like it could be in “About Uncirculated” or “Mint State” condition, professional grading can increase the value by hundreds or even thousands of dollars. If it is very worn, the $50 grading fee might be more than the coin is worth.

### Q: How can I tell if my 1917 half dollar is fake?

A: Authentic 1917-S half dollars are made of silver, so they are not magnetic. If your coin sticks to a magnet, it is a fake. Additionally, weigh the coin on a digital scale; it should be very close to 12.5 grams. Using an app like CoinKnow can also help you compare your coin’s features to high-resolution images of known authentic pieces.

### Q: What is the most expensive 1917-S Reverse ever sold?

A: While prices fluctuate, high-grade MS66 or MS67 examples have sold for over $40,000 at major auctions like Heritage Auctions. These coins are exceptionally rare and possess a nearly perfect strike and original luster that is almost never seen for this year.

### Q: Can I spend a 1917-S Half Dollar at a store?

A: Technically, yes, it is legal tender for 50 cents. However, doing so would be a huge mistake! Even in the worst possible condition, its silver content alone makes it worth at least $10, and its collector value starts at around $25. Always check your change before spending it!