1998-S Washington Quarter Value: Guide to Proof Silver Prices

The 1998-S Washington Quarter is worth anywhere from $5 in standard proof condition to over $100 for high-grade silver versions. While most quarters you find in your pocket change are worth exactly twenty-five cents, the “S” mint mark on this specific year indicates a special strike intended for collectors rather than daily spending.

Condition/Type	Estimated Value
1998-S Clad Proof (Deep Cameo)	$3 – $7
1998-S Silver Proof (Deep Cameo)	$10 – $15
1998-S Silver Proof (PR70 Grade)	$40 – $110

Identifying Your 1998-S Washington Quarter

If you’ve discovered a shiny 1998 quarter with an “S” mark, you are likely holding a proof coin. Unlike the millions of quarters struck in Philadelphia (P) or Denver (D) for general circulation, these were produced at the San Francisco Mint specifically for annual collector sets. If you are unsure about the variety you have, using a top coin identifier and value app can help you distinguish between the two main types.

The 1998-S comes in two distinct compositions: copper-nickel clad and 90% silver. To the untrained eye, they look nearly identical, but the silver version is significantly more valuable to investors. Collectors often use tools like CoinKnow to track the market fluctuations for these specific proof strikes. Finding one in your change is rare, as these were never meant to be spent. If you do find one, it likely came from a “broken” proof set where someone spent the contents of a collection.

Because these coins were struck with polished dies and planchets, they feature a “Cameo” effect. This means the raised portrait of George Washington looks frosted and white, while the background (the field) looks like a dark, deep mirror. This aesthetic appeal is why the 1998-S Washington Quarter remains a favorite for budget-conscious hobbyists and serious numismatists alike.

The Difference Between Clad and Silver Proofs

One of the most important factors in determining the 1998-S Washington Quarter value is the metal content. In 1998, the U.S. Mint produced approximately 2 million clad proof quarters and just over 870,000 silver proof quarters. Because the silver mintage is lower, these coins command a premium. You can check the edge of the coin to tell them apart; if you see a copper stripe, it’s a clad coin. If the edge is solid silver-white, you’ve struck silver.

The silver price of these coins provides a “floor” for their value. Even if the coin is scratched, the 90% silver content ensures it is worth more than its face value. For a deeper look at the technical specifications, you can explore the 1998 silver and clad quarter value information provided by professional grading databases. Knowing which one you have is the first step in accurate appraisal.

Feature	Clad Proof	Silver Proof
Composition	Copper-Nickel	90% Silver, 10% Copper
Weight	5.67 grams	6.25 grams
Edge Appearance	Copper streak visible	Solid silver color

Why the 1998-S Year is Special for Collectors

The year 1998 marked the end of an era. It was the final year of the original Washington Quarter reverse design (the eagle) before the U.S. Mint launched the famous 50 State Quarters Program in 1999. Because of this, many collectors want a 1998-S in pristine condition to “cap off” their sets of original Washington Quarters. This sentimental and historical significance keeps the demand steadily higher than some earlier 90s dates.

When evaluating your collection, the CoinKnow app can provide historical context on why ending designs often see a price bump. While the 1998-P and 1998-D quarters were minted in the hundreds of millions, the “S” mint remained exclusive. If you are comparing your find to common pocket change, you will notice the common 1998-P quarter price data usually shows values of only 25 cents unless the coin is in perfect uncirculated condition.

Because 1998 was the “last of its kind,” many investors hoarded these proof sets. This means there are actually many high-quality examples available today. To get a high price, your coin must be essentially flawless, without fingerprints, scratches, or “cloudiness” on the mirror surfaces (often called milk spots).

Grading and the “Deep Cameo” Standard

Professional grading is what pushes a $5 coin into the $100+ range. Professional services like PCGS or NGC use a 70-point scale. For proof coins like the 1998-S, you will almost always see the designation “PR” (Proof) followed by a number. A PR69 is a near-perfect coin, while a PR70 is absolute perfection. Most 1998-S quarters found in the wild without their original plastic packaging will grade much lower, usually around PR60 to PR63.

The “Deep Cameo” (DCAM) or “Ultra Cameo” designation is also vital. This refers to the contrast between the shiny field and the matte portrait. In 1998, the Mint had perfected this process, so most 1998-S quarters are Deep Cameo. However, if that frostiness is missing or looks light, the value will drop. Using CoinKnow allows you to see visual examples of what “frost” should look like.

Grade Level	Estimated Value (Clad)	Estimated Value (Silver)
PR 65 (Typical)	$3.00	$10.00
PR 69 (Near Perfect)	$12.00	$25.00
PR 70 (Perfect)	$45.00	$120.00

How to Sell Your 1998-S Washington Quarter

If you believe you have a high-value silver proof or a perfect PR70 clad quarter, the next step is finding a buyer. For coins worth under $20, your best bet is often a local coin shop or an online marketplace like eBay. However, be aware that selling a single $5 coin on eBay might result in no profit after shipping fees and seller commissions.

For more valuable specimens, like a PR70 Silver DCAM, specialty auctions or coin shows are better venues. Always handle your coin by the edges and never touch the flat surfaces, as the oils from your skin can permanently ruin a proof finish and destroy its market value. If the coin is already in a plastic “slab” from a grading company, do not remove it, as the encapsulation serves as a guarantee of its authenticity and grade.

Many casual collectors start their selling journey by researching the auction history on CoinKnow. This helps set realistic expectations. Remember, “asking prices” on websites are not the same as “sold prices.” Just because someone lists a 1998-S quarter for $500 doesn’t mean it’s worth that; always look for what people have actually paid recently.

Common Errors Found on 1998 Quarters

While the 1998-S is a proof coin—meaning it was struck with extra care—errors can still occur. These errors can significantly increase the 1998-S Washington Quarter value. Common errors to look for include “doubled dies,” where parts of the lettering or the date appear to have a shadow or a ghost image next to them. On a proof coin, these are exceptionally rare and highly sought after.

Other errors might include “off-center strikes,” though these are almost never found in proof sets because the Mint’s quality control is so high. More likely, you might find a “caddy” error or a “mechanical double” which doesn’t add much value. If you think you’ve spotted something unique, it is worth having a professional take a look. A truly unique error on a proof coin can sometimes reach prices upwards of $500 at auction.

FAQs

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Q: How can I tell if my 1998-S quarter is silver without weighing it?

A: The easiest way is the “edge test.” Hold the coin up and look at the ribbed edge. If you see a solid silver/white color, it is likely the 90% silver version. If you see a orange or copper-colored stripe running through the middle, it is the standard copper-nickel clad version.

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Q: Is a 1998-S quarter rare?

A: It is “low mintage” compared to business-strike quarters from Philly or Denver, but it is not “rare” in the world of numismatics. Millions were produced, and most have been preserved in collections. It is only rare to find one in your actual pocket change.

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Q: Should I get my 1998-S quarter professionally graded?

A: Only if it appears to be absolutely perfect. Because the cost of grading is usually $20-$40 per coin, it only makes sense to grade a 1998-S if you believe it will achieve a PR70 grade, which would make the coin worth more than the cost of the grading service itself.

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Q: What is the silver content of the 1998-S Silver Proof Quarter?

A: These coins contain 0.1808 troy ounces of pure silver. Therefore, even if the coin is damaged, its value will always stay above the current market price (spot price) of that much silver.

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Q: Can I find a 1998-S quarter in circulation?

A: It is possible but highly unlikely. They were only sold in sets to collectors. If you find one in circulation, it usually means a set was stolen or accidentally spent. Such a coin will likely be “impaired,” meaning it has scratches that lower its collector value to just its silver melt value.