The 2006 S North Dakota State Quarter is worth anywhere from $5 in standard silver-clad proof condition to over $50 for high-grade silver versions. If you have found one of these shiny, “S” mint marked coins in your change or an old collection, you likely have a specially struck proof coin intended for collectors rather than general circulation.
Understanding the San Francisco Mint Proof Quality
When you look at your 2006 North Dakota quarter, the first thing you might notice is the “S” mint mark located on the obverse (heads) side, just to the right of George Washington’s ponytail. This “S” stands for the San Francisco Mint, which exclusively produced proof coins for this series. Unlike the quarters you usually find in your pocket (which come from Philadelphia or Denver), these coins were struck with polished dies and planchets to create a mirror-like finish.
If you are curious about the specific history or rarity of your set, using a top coin identifier app can help you distinguish between the two different metal compositions issued this year. San Francisco minted both a copper-nickel clad version and a 90% silver version. Identifying which one you have is the first step in determining if you are holding a common collector item or a more valuable silver piece. Many enthusiasts use the CoinHix app to zoom in on the edge of the coin; if you see a solid silver stripe with no copper core, you’ve found the silver variety.
Because these were sold in protective plastic sets, finding one in “wild” circulation is rare. However, when people break open sets to spend the money, these coins enter the economy. While they lose some value due to scratches and wear, they still hold a premium because of their limited mintage and beautiful design featuring grazing American Bison and a sunset over the Badlands.
Calculating the Market Value for Clad and Silver Proofs
The value of a 2006-S North Dakota quarter is heavily dependent on whether it is the “Clad” or “Silver” edition. The clad version consists of a copper core plated with nickel, while the silver version contains 0.1808 troy ounces of pure silver. During 2006, the US Mint saw high demand for the “50 State Quarters” program, and millions of these sets were produced.
In most cases, a clad proof North Dakota quarter in its original packaging sells for about $4 to $7. If the coin has been removed and circulated, its value drops closer to its face value, though collectors may still pay $1 or $2 for a clean specimen. The silver version is much more desirable. Due to the intrinsic metal value and collector demand, you can expect a silver proof to fetch between $12 and $18 in typical “Gem” condition.
For those looking for precise market data, you can check the current 2006 quarter price ranges to see how recent auctions have performed. Prices fluctuate based on the spot price of silver and the current interest in the Statehood series. Using tools like CoinHix allows you to track these price changes in real-time, ensuring you don’t sell your treasures for less than they are worth.
Grading and the Impact of PR70 Deep Cameo
Professional grading by services like PCGS or NGC can drastically change the price of your 2006-S North Dakota quarter. Most proof coins come out of the mint in nearly perfect condition, often grading at PR68 or PR69. However, the “holy grail” for modern collectors is the PR70 grade. This indicates a perfect coin with no visible flaws even under 5x magnification.
A 2006-S North Dakota Silver Quarter graded PR70 Deep Cameo can sell for $40 to $60, or even more if the holder is from a prestigious grading company. A “Deep Cameo” (DCAM) designation means there is a heavy contrast between the frosty white images (the bison and the hills) and the deeply mirrored black fields of the background. If your coin looks like a black-and-white photograph with incredible detail, it likely qualifies for this designation.
To get an idea of how these grades affect the broader market, you might want to look at the high-grade 2006 quarter auction trends which highlight how perfection commands a massive premium. Even for common dates like North Dakota, a perfect score makes the coin a target for registry set collectors who want only the best of the best.
Design Elements and the 2006 North Dakota Legacy
The North Dakota quarter was the 39th coin released in the 50 State Quarters Program. The reverse design features two American Bison grazing in the foreground with a scenic view of the North Dakota Badlands in the back. It was designed by Donna Weaver and engraved by John Mercanti. The design represents the rugged beauty and the historical wildlife heritage of the state.
When inspecting your coin, look for sharp details in the bison’s fur and the ridges of the hills. On proof coins, these details should be exceptionally crisp. If you see any doubling in the letters “E Pluribus Unum” or the date, you might have found an “error” coin, which could significantly increase the value. While no major errors have been widely reported for the 2006-S North Dakota issue, discovery coins happen all the time.
If you suspect your coin is unique, we recommend using the CoinHix app to compare your quarter against high-resolution images of standard proofs. This makes it easier to spot subtle differences that could mean the difference between a common coin and a rare minting mistake.
Historical Price Reference for 2006-S Quarters
To help you understand the current market, we have compiled a price table based on the various versions and grades of the 2006-S North Dakota Quarter. Please remember that these prices are estimates based on retail sales and collector demand.
| Coin Version | Grade / Condition | Estimated Value |
|---|---|---|
| 2006-S Clad Proof | PR65 to PR68 | $3.00 – $6.00 |
| 2006-S Clad Proof | PR70 Deep Cameo | $25.00 – $35.00 |
| 2006-S Silver Proof | PR65 to PR69 | $12.00 – $22.00 |
| 2006-S Silver Proof | PR70 Deep Cameo | $50.00 – $75.00 |
| 2006-S Proof (Circulated) | Impaired Proof | $0.25 – $1.00 |
Frequently Asked Questions
Q: How can I tell the difference between the clad and silver 2006-S North Dakota quarters?
A: The most reliable method is to look at the edge of the coin. A silver quarter will show a solid, bright silver edge. A clad quarter will show a distinct copper-colored stripe running through the middle. You can also weigh them; a silver quarter weighs 6.25 grams, while a clad quarter weighs 5.67 grams.
Q: Is a quarter with an ‘S’ mint mark always valuable?
A: Not necessarily. While ‘S’ mint marks denote proof coins that are worth more than their face value, they are not necessarily “rare.” The US Mint produced over 2.8 million clad proof sets and over 1 million silver proof sets in 2006. They are worth a premium, but don’t expect to retire on one!
Q: Should I get my 2006-S North Dakota quarter graded?
A: Generally, it is only worth grading if the coin is in perfect PR70 condition. The cost of grading (usually $30-$50 per coin including shipping) often exceeds the value of the coin itself for lower grades like PR68 or PR69.
Q: Where is the best place to sell my North Dakota quarters?
A: For common clad proofs, local coin shops or eBay are your best bets. For silver proofs or high-grade PR70 specimens, specialized numismatic auctions or collector groups may yield a higher price. Using a price tracking app can help you decide when the market is right to sell.
