The 1948-S Washington Quarter is worth anywhere from $8 in worn condition to over $1,200 in high-grade mint state. Finding this “S” mint mark coin in your change or an old collection is an exciting discovery, as it remains one of the more sought-after dates from the post-war era.

Condition	Estimated Value
Good / Fine (Circulated)	$8.00 – $12.00
Extremely Fine (XF)	$15.00 – $25.00
Uncirculated (MS63)	$45.00 – $65.00
Choice Mint State (MS67+)	$500.00+

History and Significance of the 1948-S Washington Quarter

The year 1948 was a pivotal time for the United States Mint as the country settled into the post-WWII economic boom. The San Francisco Mint, denoted by the “S” mint mark, produced a relatively low number of quarters compared to Philadelphia or Denver that year. This makes the 1948-S Washington Quarter a distinct favorite for hobbyists.

If you are unsure whether the coin you hold is a genuine 1948-S or just a regular business strike, using a top coin identifier app can help you verify the mint mark location and the coin’s overall authenticity within seconds.

Collectors value the 1948-S because it is composed of 90% silver. Unlike the copper-nickel quarters we use today, these vintage pieces contain intrinsic bullion value. This means even a heavily damaged 1948-S quarter will never be worth just 25 cents; its “melt value” ensures a much higher floor price. CoinKnow users often report that finding these in estate sales is a highlight of their numismatic journey.

How to Identify the “S” Mint Mark on Your 1948 Quarter

To determine the true 1948 silver quarter value, you must first locate the mint mark. On the Washington Quarter series minted between 1932 and 1964, the mint mark is found on the reverse (tails) side of the coin. Look directly below the center of the eagle, just above the word “Quarter.”

If you see a small “S,” your coin was struck in San Francisco. If the space is blank, it was minted in Philadelphia. If there is a “D,” it came from Denver. The “S” mark is particularly desirable because the San Francisco Mint had a reputation for producing sharp, well-struck coins.

Knowing the exact origin is the first step in using professional tools like CoinKnow to track your collection’s growth. The rarity of the mint strike directly influences the 1948 silver quarter price trends that collectors monitor daily to decide when to buy or sell.

Mint Location	Mintage Volume	Rarity Factor
Philadelphia (No Mark)	35,196,000	Common
Denver (D)	16,766,800	Scarce
San Francisco (S)	15,960,000	Most Desirable

Grading the Condition of a 1948-S Silver Quarter

The biggest factor in determining the price of your coin is its “grade,” or its state of preservation. Most 1948-S quarters found in circulation today show significant wear. The eagle’s feathers on the back and Washington’s hair details on the front are often smoothed out.

A “Good” grade coin is heavily worn but has all details readable. As we move up to “Extremely Fine,” the feathers on the eagle’s breast become visible. When you reach “Mint State” (MS), the coin looks as if it just left the mint, with a bright, satiny luster.

For a detailed breakdown, many enthusiasts consult a 1948-S Washington Quarter value chart to see how localized wear impacts the market rate. Even a tiny scratch in a focal area can drop the price by $50 or more. CoinKnow can provide high-resolution image comparisons to help you estimate your coin’s grade from home.

Understanding the Silver Value Melt Price

Because the 1948-S Washington Quarter is 90% silver and 10% copper, it has a base value tied to the precious metals market. Each of these quarters contains approximately 0.1808 troy ounces of pure silver.

When silver prices rise, the value of even the most beat-up 1948-S quarter increases. This is known as the “junk silver” value. While collectors pay a premium for the San Francisco mint mark, investors often buy these in bulk just for the metal content.

Silver Price (Per Oz)	Approximate Melt Value
$20.00	$3.62
$25.00	$4.52
$30.00	$5.42

Comparing these numbers to the numismatic (collector) value shows that the 1948-S usually sells for significantly more than its metal weight. This is due to its lower mintage and the popularity of the Washington series.

Rare Varieties and Errors to Look For

While the standard 1948-S is valuable, certain “error” versions can be worth a fortune. Look for “Double Die” errors, where the letters or numbers appear doubled under a magnifying glass. These occur when the coin die is struck twice with a slight misalignment.

Another rare find is the “Repunched Mint Mark” (RPM). In 1948, mint marks were still punched into the dies by hand. Sometimes, the worker would hit the “S” twice, creating a overlapping shadow effect. These variations are highly prized by specialists and can double or triple the coin’s value.

If you suspect you have an error coin, using the AI scanning features of CoinKnow can help highlight anomalies that the naked eye might miss. Detecting a rare error is the fastest way for a $10 coin to turn into a $500 treasure.

Where to Sell Your 1948-S Washington Quarter

If you decide to part with your coin, you have several options. Local coin shops are the fastest way to get cash, though they typically pay 20-30% below retail value to ensure they can make a profit. Online auctions like eBay are great for reaching a wider audience but involve shipping risks and fees.

For high-grade specimens (MS65 and above), professional grading services like PCGS or NGC are recommended. A certified, “slabbed” coin often sells for much more than a raw coin because the grade is guaranteed.

Before listing your item, check current market demand. Tools like CoinKnow aggregate recent auction data so you know exactly what buyers are paying right now. This prevents you from underselling a rare “S” mint mark quarter that might be in better condition than you realize.

Summary of the 1948-S Washington Quarter

In summary, the 1948-S Washington Quarter is a silver classic that serves as a bridge between the early days of the series and the modern era. With its 15.9 million mintage, it is not “rare” in a historical sense, but it is “scarce” in high grades.

Whether you are holding it for its 90% silver content or its numismatic beauty, it remains a pillar of American coinage history. Always keep your silver quarters in a cool, dry place to prevent toning or “milk spots” that can detract from their visual appeal and market value.

FAQ

Q: Is a 1948-S quarter made of real silver?

A: Yes, all Washington Quarters minted from 1932 to 1964 are composed of 90% silver and 10% copper. Starting in 1965, the U.S. Mint switched to a copper-nickel “clad” composition.

Q: How much silver is in a 1948-S Washington Quarter?

A: Each 1948-S quarter contains exactly 6.25 grams of total weight, with 5.625 grams (0.1808 troy ounces) of that being pure silver.

Q: Where is the mint mark on a 1948-S quarter?

A: The “S” mint mark is located on the reverse (back) of the coin, directly below the eagle’s wreath and above the “R” in the word “QUARTER.”

Q: What is the most valuable 1948-S quarter ever sold?

A: While average uncirculated coins sell for under $100, exceptional examples graded MS68 have sold at major auctions for over $2,000 due to their perfection and beautiful “toning.”

Q: Should I clean my 1948-S quarter to make it worth more?

A: No! You should never clean old coins. Cleaning creates microscopic scratches that collectors can easily spot, and it can reduce the coin’s value by 50% or more. Genuine “patina” is much more desirable.