The 2006-S North Dakota State Quarter is worth anywhere from $0.50 in typical Proof condition to over $500 for rare, high-grade Silver specimens. Whether you found one in a collection or specific mint set, understanding the distinction between clad and silver versions is key to determining its true market value.
| Coin Type | Condition / Grade | Estimated Value |
|---|---|---|
| 2006-S Clad Proof | PR 65 to PR 69 | $0.50 – $5.00 |
| 2006-S Clad Proof | PR 70 DCAM | $15 – $35 |
| 2006-S Silver Proof | PR 65 to PR 69 | $8.00 – $15.00 |
| 2006-S Silver Proof | PR 70 DCAM | $40 – $125+ |
History and Significance of the North Dakota State Quarter
The 2006 North Dakota Quarter was the 39th coin released in the United States Mint’s popular 50 State Quarters Program. For many everyday Americans, finding a coin with the “S” mint mark is an exciting moment, as it signifies the coin was produced at the San Francisco Mint. Unlike the millions of quarters struck in Philadelphia or Denver for general circulation, the “S” versions were intended specifically for collectors and were sold in various proof sets.
If you are unsure whether your pocket change is a rare find or a common spending coin, using the best coin identifier app can help you distinguish between the different mintages. The North Dakota design features two grazing American bison in front of a sunset, set against a rugged landscape with the words “Badlands.” This imagery celebrates the state’s natural beauty and the legacy of Theodore Roosevelt, who famously hunted and lived in the region.
Because these coins are nearly 20 years old, many have naturally found their way into private collections or, occasionally, back into the wild via “break-outs” from proof sets. While a standard circulating quarter from 2006 is usually worth just face value, the 2006-S North Dakota Quarter value stays relatively stable due to its limited production. Utilizing tools like CoinHix allows you to track these trends in real-time.
Identifying the 2006-S Clad vs. Silver Versions
One of the most important things to check is whether your 2006-S North Dakota Quarter is made of copper-nickel (Clad) or 90% Silver. The San Francisco Mint produced both versions. The silver version is inherently more valuable because of its precious metal content, whereas the clad version relies purely on its “Perfect” grade status for high pricing.
To tell the difference, look at the edge of the coin. If you see a distinct copper stripe, it is a clad coin. If the edge is solid bright silver, you likely have the silver proof. Another method is weighing the coin; a silver quarter weighs 6.25 grams, while a clad quarter weighs 5.67 grams. If you want a digital way to log your finds, CoinHix is a great mobile assistant for cataloging these variants.
The market for these coins can be surprisingly active. When looking at comprehensive 2006 quarter value guides, you will notice that silver proofs consistently command a premium. Collectors who are completing their “Silver State Quarter” sets are always on the hunt for pristine, Deep Cameo (DCAM) examples that have no scratches or cloudiness on the mirror-like surfaces.
| Feature | Clad Proof | 90% Silver Proof |
|---|---|---|
| Mint Mark | S | S |
| Weight | 5.67 grams | 6.25 grams |
| Edge Appearance | Shows copper line | Solid white/silver |
| Mintage (approx) | 2.8 Million | 1.5 Million |
Determining the Grade of Your North Dakota Quarter
The “grade” or condition of your coin is the biggest factor in its final price. Since 2006-S quarters were struck as “Proofs,” they started their life with a beautiful, mirror-like finish and frosted details. In the numismatic world, these are graded on a scale of 1 to 70. A grade of PR 70 (Proof 70) represents a perfect coin with no visible flaws under 5x magnification.
Most 2006-S North Dakota quarters found in original mint packaging will grade between PR 67 and PR 69. To reach a higher price point, the coin must have “Deep Cameo” (DCAM) contrast, where the bison and text look like white frost over a black mirror. If your coin has fingerprints or light scratches from being handled, the value drops significantly toward the $1.00 – $3.00 range.
Knowing how to spot these subtle differences is part of the fun of coin collecting. You can refer to detailed price data for 2006 quarters to see how much a difference in grade can cost. Even a single point on the grading scale can mean a jump of $50 or more in the high-end market.
Price Performance and Rarity of the Silver Proof
The Silver Proof version of the North Dakota state quarter has become a favorite among investors who like a mix of numismatic value and bullion value. While the silver content (melt value) provides a “floor” for the price, the collector demand provides the “ceiling.” Over the years, the price of these silver quarters has fluctuated with the spot price of silver but remains a staple for statehood quarter enthusiasts.
During peak market cycles, a perfect PR 70 Deep Cameo Silver North Dakota Quarter has been known to sell for over $100 at auction. However, for a raw (ungraded) coin, you can expect a more modest return. If you find a silver proof in its original lens from the US Mint, it is often better to keep it in that protective case to maintain its value.
For those tracking their portfolio, using CoinHix can provide a clear view of how these silver quarters are performing month over month. Because many people lost interest in modern quarters after the program ended in 2008, the supply of high-quality examples is beginning to tighten, leading to steady price increases for those “top-of-the-pop” specimens.
| Condition | Avg. Clad Price | Avg. Silver Price |
|---|---|---|
| PR 67 DCAM | $2.50 | $10.00 |
| PR 68 DCAM | $4.00 | $15.00 |
| PR 69 DCAM | $9.00 | $25.00 |
| PR 70 DCAM | $30.00 | $120.00 |
Are There Any Rare Errors for the 2006-S Quarter?
While “S” mint marked quarters are generally better struck than circulation coins, errors can still happen. Collectors of 2006-S North Dakota quarters should look for “Double Dies” or “Striking Errors,” though these are quite rare in proof sets due to the strict quality control at the San Francisco Mint. If you find a coin where the bison or the date 2006 looks doubled, you might have a very valuable error.
Another rare occurrence is a “Mule” error or a “Proof Strike on a Wrong Planchet.” These are essentially the “Holy Grail” of modern coin collecting. While the chances of finding one in a standard proof set are slim, it is always worth giving your coin a close inspection under a magnifying glass. Even small imperfections like “haze” on the surface of the silver can affect the price, so keeping them in dry, cool conditions is essential.
In the world of modern coins, many errors are actually just damage from circulation. A coin that has been scratched or dinged in a vending machine is not an error; it’s just a “spender.” If you are confused about whether a mark is an error or damage, taking a high-resolution photo and using a specialized coin app can often provide an instant answer.
Tips for Selling Your North Dakota Quarter
If you have decided that you want to cash in on your 2006-S North Dakota State Quarter, you have a few options. Selling locally to a coin shop is the fastest way, but you will likely receive a wholesale price (often 50-60% of the retail value). For more expensive items, such as PR 70 DCAM silver coins, online auction sites or specialized numismatic platforms are your best bet to reach collectors willing to pay a premium.
Before selling, make sure to check the current “spot” price for silver if you have the silver version. Never clean your coins! Cleaning a proof coin will create tiny scratches called “hairlines” that can drop the value from $20 down to $0.25 instantly. Amateur cleaning is the number one reason why many potentially valuable coins lose their market appeal.
Finally, keep an eye on market trends. Collector interest in the 50 State Quarters program often comes in waves. As a new generation starts collecting, the demand for high-quality “S” mint quarters from the mid-2000s is likely to grow. Holding onto high-grade silver versions might be a smart long-term play for those who enjoy the historical aspect of the bison design.
FAQ
Q: Why does my North Dakota Quarter have an ‘S’ mint mark?
A: The ‘S’ stands for San Francisco. All quarters with an ‘S’ mint mark from 2006 were produced specifically for collectors in proof sets, not for general circulation in stores.
Q: How can I tell for sure if my quarter is silver without weighing it?
A: Look at the edge (the rim) of the coin. If you see a solid silver color with no traces of copper/orange, it is 90% silver. If you see a copper line sandwiched between two layers of silver-colored metal, it is a standard clad coin.
Q: Is a 2006-P or 2006-D North Dakota Quarter worth anything?
A: Generally, no. Quarters from the Philadelphia (P) and Denver (D) mints were made by the billions for everyday change. Unless they are in absolutely flawless uncirculated condition or have a major error, they are only worth 25 cents.
Q: Where is the best place to sell my 2006-S quarter?
A: For more common clad proofs, eBay or local coin clubs are best. For high-grade silver proofs that are professionally graded (PCGS/NGC), consider a reputable auction house or a legacy coin dealer.