2006-S South Dakota Silver Proof Quarter Value and What It’s Worth Today
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The 2006-S South Dakota Silver Proof Quarter is worth anywhere from $8 in typical proof condition to over $50 or more for pristine, high-grade examples. If you pulled one of these out of an old coin collection or proof set, you might be sitting on more than just pocket change — and this guide will walk you through everything you need to know.
What Is the 2006-S South Dakota Silver States Quarter?
The 2006-S South Dakota quarter is part of the United States Mint’s popular 50 State Quarters Program, which ran from 1999 to 2008. Each year, five states were honored with their own unique reverse design. South Dakota’s quarter features Mount Rushmore, a ring-necked pheasant, and a Chinese ring-necked pheasant in flight — iconic imagery that captures the spirit of the Mount Rushmore State.
The “S” mintmark on this coin means it was struck at the San Francisco Mint, which is responsible for producing proof coins and special collector editions. The Silver version of this proof quarter is made from 90% silver and 10% copper — the same silver composition used in classic pre-1965 U.S. coinage.
This is not a coin you’d ever find in everyday circulation. It was sold as part of a special Silver Proof Set directly to collectors. If you’re not sure what you have, using a coin identifier and value app can instantly help you confirm the details, including mintmark, metal content, and current market value.
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How Much Is the 2006-S South Dakota Silver Quarter Worth?
The value of the 2006-S South Dakota Silver Quarter depends primarily on its grade and condition. Proof coins are graded on the standard Sheldon scale from PR60 to PR70. The higher the grade, the more valuable the coin.
Most examples pulled from original Silver Proof Sets grade between PR65 and PR69 and are worth between $8 and $30. A flawless PR70 Deep Cameo example — the highest possible grade — can command $40 to $60 or more depending on the grading service and current market demand.
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The silver melt value also adds a floor to its worth. With roughly 0.1808 troy ounces of silver content, the coin’s raw silver value floats with the spot price of silver. At $28 per ounce, for example, the melt value alone is about $5.06. For detailed 2006 quarter value breakdowns by grade and mint, checking a reliable coin price database is always a smart move.
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| Grade | Description | Estimated Value |
|---|---|---|
| PR65 Cameo | Strong contrast, minor imperfections | $8 – $12 |
| PR67 Deep Cameo | Excellent mirrors, sharp cameo effect | $12 – $20 |
| PR68 Deep Cameo | Near perfect, very few marks | $18 – $28 |
| PR69 Deep Cameo | Nearly flawless surfaces | $25 – $40 |
| PR70 Deep Cameo | Perfect by grading standards | $45 – $60+ |
Key Factors That Affect the 2006-S South Dakota Quarter Value
Understanding what drives value is important before you buy or sell. For the 2006-S South Dakota Silver Quarter, three main factors come into play: grade, cameo designation, and whether it has been professionally graded.
Grade is the biggest driver. A coin in PR70 Deep Cameo can be worth five to ten times more than one graded PR65. Even small differences in surface quality — a hairline scratch, a fingerprint smudge, or a handling mark — can drop a coin from one grade tier to another.
Cameo contrast matters a great deal for proof coins. Deep Cameo (DCAM) refers to the frosty, white raised design set against mirror-like fields. Coins with a strong Deep Cameo designation are the most desirable and tend to fetch the highest prices at auction.
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Third-party grading from PCGS or NGC significantly increases buyer confidence and resale value. An encapsulated, graded coin is far easier to sell and tends to bring higher prices than a raw example of similar quality. CoinKnow is a great tool for tracking certified coin values and seeing what similar examples have sold for recently.
How Many 2006-S Silver Proof Quarters Were Made?
The San Francisco Mint produced approximately 1.05 million Silver Proof Sets in 2006. That means the 2006-S South Dakota Silver Quarter has a mintage of around 1.05 million pieces — making it relatively available compared to older, rarer proof coins, but still far more limited than circulation strikes.
Because these coins were sold as part of complete Silver Proof Sets rather than individually, many remain in their original packaging. Coins still in their original government issue packaging with certificates of authenticity may carry a slight premium over raw examples.
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You can compare current market prices for similar State Quarter issues — for example, current sales data for the 2006-P Nevada State Quarter gives a helpful benchmark for understanding how 2006 State Quarters are trending in today’s market.
Should You Sell, Hold, or Grade Your 2006-S South Dakota Silver Quarter?
If you believe your coin is in exceptional condition — say, you’ve kept it sealed in its original government packaging — it may well be worth submitting to PCGS or NGC for professional grading. If it comes back as a PR69 or PR70 Deep Cameo, the value bump can easily justify the grading fee.
If the coin shows any signs of handling, cleaning, or environmental damage, professional grading may not improve your return. In that case, selling as a raw silver proof to a local dealer or online marketplace makes more practical sense.
For casual collectors and everyday finders, CoinKnow offers a convenient way to research current values and track your collection without needing expert knowledge. It’s one of the most user-friendly platforms available for people who are just getting started in the coin hobby.
Your Old Coin Could Be Valuable!
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FAQ
Q: Is the 2006-S South Dakota quarter made of real silver?
A: Yes. The 2006-S South Dakota Silver Proof Quarter is composed of 90% silver and 10% copper, giving it a silver weight of approximately 0.1808 troy ounces. This is the same silver composition used in U.S. quarters before 1965.
Q: How can I tell if I have the silver version or the clad version?
A: The easiest way is to check the edge of the coin. A silver proof will show a solid silver-white edge, while a clad coin will have a visible copper stripe running through the middle. The “S” mintmark on both versions is the same, so the edge is your best quick test. You can also weigh the coin — a silver proof weighs 6.25 grams versus 5.67 grams for the clad.
Q: Where is the best place to sell a 2006-S South Dakota Silver Quarter?
A: For single coins in average proof condition, eBay and coin shows are your best options. If you have a high-grade example graded by PCGS or NGC, major coin auction houses can yield better results. Always check recent sold listings before accepting any offer to make sure you’re getting fair market value.
