The 2017-S Effigy Mounds Quarter is worth anywhere from $0.25 for a circulated business strike to over $40 for a high-grade Silver Proof. While most quarters found in your pocket change are worth face value, certain San Francisco mintages hold significant premiums for collectors and casual finders alike.
| Coin Type / Grade | Estimated Value |
|---|---|
| Circulated (Clad Business Strike) | $0.25 – $0.75 |
| Uncirculated (MS65 Clad) | $1.50 – $5.00 |
| Clad Proof (PR69 – PR70) | $6.00 – $12.00 |
| Silver Proof (PR70 Deep Cameo) | $35.00 – $55.00 |
Understanding the 2017-S Effigy Mounds Quarter
The 2017-S Effigy Mounds Quarter is part of the “America the Beautiful” (ATB) series, celebrating the national monument in Iowa known for its prehistoric animal-shaped mounds. If you are trying to determine if your coin is a hidden gem, using the best coin identifier app can help you distinguish between a common circulation strike and the rarer San Francisco mint versions.
What makes the “S” mint mark special for 2017 is that the San Francisco Mint produced three distinct types of this quarter. First, there are the “Circulating Quality” clad strikes intended for collectors but occasionally found in change. Second, there are the traditional Clad Proofs with a mirror-like finish. Finally, there is the 90% Silver Proof version, which carries the highest intrinsic and numismatic value.
If you happen to find one of these in your spare change, check the mint mark located to the right of George Washington’s ponytail. If you see an “S,” you have something more interesting than the standard Denver (D) or Philadelphia (P) releases. To get a quick estimate on your specific find, the CoinHix app offers instant recognition and market data for all ATB quarters.
The Value of 2017-S Clad Business Strikes
Wait, did the San Francisco Mint make quarters for circulation? Technically, no. However, the Mint sold “S” mint business-strike quarters in bags and rolls directly to collectors. Over time, many of these coins have been broken out of their original packaging and spent at grocery stores or gas stations.
If you find a 2017-S Effigy Mounds quarter that looks “normal” (not shiny or mirrored) but has that “S” mark, it is technically an NIFC (Not Intended for Circulation) coin. While a worn version might only be worth a small premium, a pristine, uncirculated specimen can be worth several dollars. For those interested in the finer details, reviewing Effigy Mounds quarter auction records shows that top-tier grades can fetch surprisingly high prices at specialized sales.
| Condition | Clad “S” Business Strike Value |
|---|---|
| About Uncirculated (AU58) | $0.75 – $1.25 |
| Mint State 63 (MS63) | $2.00 – $3.50 |
| Mint State 67 (MS67) | $15.00 – $25.00 |
Identifying 2017-S Silver Proof Quarters
The most valuable version of the 2017-S Effigy Mounds Quarter is the Silver Proof. These were never intended to be spent and were sold only in special annual proof sets. These coins are composed of 90% silver and 10% copper, making them “junk silver” at a minimum, but their collector value far exceeds their melt value.
A Silver Proof is easy to spot because of its “Deep Cameo” finish—the design appears frosted and white, while the background is as reflective as a mirror. If you look at the edge of the coin and see a solid silver stripe with no copper (orange) line, you have a silver coin. These are prized by collectors who want a complete set of the America the Beautiful series.
Market values for these coins fluctuate based on the price of silver and the demand from registry set collectors. By using CoinHix, you can track these price movements in real-time. Generally, a perfect PR70 Silver Proof is the “holy grail” for this specific year and design. You can find more comprehensive data regarding 2017 quarter market values to see how the Effigy Mounds design stacks up against other releases from that year.
| Proof Type | Grade: PR69 | Grade: PR70 |
|---|---|---|
| 2017-S Clad Proof | $7.00 | $15.00 |
| 2017-S Silver Proof | $18.00 | $45.00+ |
Common Errors and Variations to Look For
While the 2017-S Effigy Mounds Quarter is generally well-struck, error hunters are always on the lookout for anomalies. Errors can turn a $1 coin into a $100 coin overnight. Because the S-mint coins were produced in smaller quantities and with more care, errors are rarer than on P or D mint coins, which actually makes them more valuable when they do appear.
Look for “Doubled Die” varieties on the reverse side. Inspect the birds (kites) or the lettering for any faint secondary outlines. Another common error type for modern quarters includes “Die Chips,” where small bumps of extra metal appear on the design. On the Effigy Mounds design, these often appear near the animal mounds or the trees.
If you suspect you have an error, don’t clean the coin! Cleaning a coin destroys its numismatic value. Instead, use a high-magnification lens or the CoinHix app to get a closer look at the details. A confirmed error on a San Francisco strike is a major find for any hobbyist.
Why the Effigy Mounds Design is Unique
The design of the 2017 Effigy Mounds quarter features an aerial view of the “Marching Bears” mound group. It was designed by Richard Masters and sculpted by Renata Gordon. The simplicity of the design—depicting the earthen mounds as seen from above—has been a point of conversation among collectors since its release.
For everyday Americans, this coin is a piece of history. The mounds were built by Native Americans between 700 and 1,400 years ago. Collecting the “S” mint version of this coin isn’t just about the money; it’s about holding a low-mintage tribute to America’s prehistoric heritage. Because the “S” mintage for business strikes was only around 900,000 (compared to hundreds of millions for P and D), the scarcity is real.
How to Store and Protect Your Found Quarters
If you’ve found a 2017-S Effigy Mounds quarter in good condition, you should take steps to preserve it. The oils from your skin can cause tarnishing or “toning” over time, which may lower the grade of a high-end proof or uncirculated coin.
Handle the coin only by the edges. For storage, avoid plastic sandwich bags or old PVC flips, as these can leach chemicals that turn the coin green. The best option is a PVC-free “2×2” cardboard holder or a plastic capsule. Keeping the coin in a cool, dry place will ensure that its value remains stable for years to come.
Frequently Asked Questions
FAQ
Q: Why does my 2017 quarter have an “S” mint mark if I found it in change?
A: While “S” mint quarters are usually for collectors, many were sold in rolls and eventually entered circulation when people spent them. They are much rarer than “P” or “D” quarters found in change.
Q: Is the 2017-S Effigy Mounds Quarter made of real silver?
A: Only if it is a Silver Proof. You can tell by looking at the edge; if you see a copper stripe, it is a copper-nickel clad coin. If the edge is solid silver/white, it is likely the 90% silver version.
Q: How much is an Effigy Mounds quarter with no mint mark worth?
A: No mint mark means it was minted in Philadelphia. These were made in the hundreds of millions and are typically only worth their face value of 25 cents unless they are in perfect, uncirculated condition.
Q: What is the rarest 2017 quarter?
A: Generally, the 2017-S Silver Proof and high-grade 2017-S business strikes are the most sought after by collectors due to their low mintage numbers compared to the standard Philadelphia and Denver issues.
