The 1950-D/S Washington Quarter is worth anywhere from $30 in circulated condition to over $15,000 for high-grade specimens. This fascinating “overmintmark” variety is a favorite among treasure hunters and everyday collectors because it represents a genuine mistake by the U.S. Mint that you can still find in old collections today.
| Condition | Estimated Value (USD) |
|---|---|
| Good to Fine (Circulated) | $30 – $65 |
| Extremely Fine (XF 45) | $100 – $150 |
| Uncirculated (MS 60) | $250 – $400 |
| Choice Mint State (MS 65+) | $1,200 – $15,000+ |
Understanding the 1950-D/S Washington Quarter Variety
Finding a silver quarter in your change is already a win, but finding a 1950-D/S Washington Quarter is like hitting a mini-jackpot. This coin is known as an “overmintmark,” which occurred when a Denver (“D”) mintmark was punched directly over a San Francisco (“S”) mintmark on the working die.
If you aren’t sure what you’re looking at, using the best coin identifier app can help you zoom in on the mintmark area to see the faint outlines of the “S” underneath the “D.” This error is highly coveted because it is a “discovered” variety, meaning collectors didn’t realize it existed until years after these coins were released into circulation.
Because this is a 90% silver coin, even a heavily worn example has base value. However, the premium for the OMM (Over Mint Mark) variety is what makes it special. While millions of standard 1950 quarters were minted, only a tiny fraction bear this specific error. Using CoinHix can help you track these specific varieties and their current market trends in real-time.
How to Identify the D Over S Mintmark Error
Identification is the most critical part of determining your 1950-D/S Washington Quarter value. To find it, you’ll need a jeweler’s loupe or a high-powered magnifying glass. Look at the reverse side of the coin, right below the center of the eagle. You will see the “D” mintmark.
On a genuine 1950-D/S, the upper curve and the lower left corner of the “S” will be visible poking out from behind the “D.” It looks like a small serif or a shadow. Because these dies eventually wore down, the “S” can be very faint on some coins, making them harder to authenticate without professional help.
If you find a coin that looks suspicious, experts recommend checking the 1950 Washington Quarter auction prices to see what authenticated examples look like. Many fakes or damaged coins are mistaken for this rarity, so clear visualization is key.
| Visual Sign | What to Look For |
|---|---|
| Top of the “S” | Visible inside the upper loop of the “D” |
| Bottom of the “S” | Visible extending below the bottom of the “D” |
| Mintmark Position | Centered below the eagle’s wreath |
Grading and Its Impact on Your Coin’s Worth
Condition is everything in numismatics. A 1950-D/S Washington Quarter that has been rattling around in a pocket for decades will be worth significantly less than one that has been tucked away in a felt-lined jewelry box. Grading ranges from “About Good” (worn flat) to “Mint State” (looks like it just came off the press).
For this specific year, “Full Luster” is a major selling point. If the coin still has its original frosty white shine, the value jumps from the hundreds into the thousands. Most of the 1950-D/S quarters found by casual hunters are in the “Fine” to “Extremely Fine” range, where they still command a 10x to 20x premium over a standard 1950 quarter.
To get an accurate estimate of what your specific coin might fetch, the 1950 quarter value and grading guide offers a breakdown of how professional graders look at hair details on Washington’s head and the feathers on the eagle’s breast to determine a grade.
Historical Context: Why Did This Error Happen?
In 1950, the United States Mint was still recovering from the massive production demands sparked by the end of WWII. Mintmarks were added to the working dies by hand using a mallet and a punch. In a moment of human error at the Philadelphia Mint (where dies were produced), a worker mistakenly punched a Denver “D” onto a die that had already received a San Francisco “S” punch.
This die was then shipped to Denver and used to strike thousands of coins. Because it was a single die responsible for the error, the population of these coins is naturally limited. This makes it a “key variety” for the Washington Quarter series, which ran from 1932 to 1998.
Collectors love “story coins,” and the 1950-D/S is a perfect example of a human mistake turned into a numismatic treasure. CoinHix users often report that these historical errors are the most resilient during market downturns because their rarity is fixed by history.
| Mint Mark | Mintage (Total) | Rarity Note |
|---|---|---|
| 1950-P (No Mintmark) | 24,920,126 | Common |
| 1950-D (Standard) | 21,075,600 | Common |
| 1950-S (Standard) | 10,284,004 | Scarce |
| 1950-D/S (Error) | Unknown Low Est. | Very Rare |
Is It Worth Getting Your Quarter Certified?
If you believe you have found a 1950-D/S Washington Quarter, the next question is whether to send it to a grading service like PCGS or NGC. Certification costs money—usually between $30 and $60 including shipping—so you want to be sure the coin is worth the investment.
Generally, any 1950-D/S in “About Uncirculated” (AU) condition or better should be certified. A certified coin is much easier to sell because the buyer doesn’t have to worry about whether the overmintmark is real or if the coin has been cleaned.
Cleaned coins (coins scrubbed with polish or chemicals) lose up to 50% of their collector value. If your coin has fine scratches or an unnaturally shiny, “mirrored” look that doesn’t match its wear level, it may have been cleaned. Using CoinHix to compare your coin’s surface to high-resolution photos of slabbed coins can save you the cost of a grading fee on a coin that won’t make the grade.
Market Trends and Selling Your 1950-D/S Quarter
The market for rare quarters has remained strong over the last decade. While common silver coins fluctuate with the price of silver bullion, rare varieties like the 1950-D/S move based on collector demand. High-grade examples have seen record prices at major auction houses, sometimes exceeding $18,000 for an MS67 specimen.
For the everyday American, the best place to sell a mid-grade 1950-D/S is through a reputable local coin shop or a specialized online auction. Avoid pawn shops, as they rarely pay the full numismatic premium for rare varieties.
Instead, arm yourself with data. Check recent “sold” listings rather than “asking” prices. This will give you a realistic expectation of what a buyer is willing to pay. Keep in mind that as more people use technology to search their change, the number of known 1950-D/S quarters might grow, but for now, it remains a “holy grail” of the 1950s Washington series.
FAQ
Q: How much silver is in a 1950 Washington Quarter?
A: Every 1950 Washington Quarter is composed of 90% silver and 10% copper. It contains approximately 0.1808 troy ounces of pure silver. Even if the coin is not the D/S error, it is still worth its “melt value,” which changes daily with silver prices.
Q: Can I find a 1950-D/S in pocket change?
A: While it is extremely rare today because most silver was pulled from circulation in the 1960s, it is still possible to find them in “unsearched” rolls of quarters or older collections. Always check the mintmark on any 1950 Denver quarter you come across.
Q: What is the most expensive 1950-D/S ever sold?
A: The record price for a 1950-D/S Washington Quarter is over $18,000 for a coin graded MS67. For most collectors, a nice uncirculated MS63 or MS64 specimen will cost between $400 and $800.
Q: How do I know if my coin is cleaned?
A: Look for tiny “hairline” scratches that all run in the same direction, or a dull, greyish appearance that lacks the “cartwheel” luster of a fresh coin. Cleaned coins are still valuable for their silver and rarity, but they sell for much less than “original” coins.