2005-S Oregon State Quarter Dollar Value Guide What This Proof Coin Is Really Worth
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The 2005-S Oregon State Quarter is worth anywhere from $2 in typical circulated condition to $15 or more in deep cameo proof grades, making it a surprisingly collectible coin hiding in many American coin jars and drawers right now.
If you stumbled across one of these quarters with a small “S” mintmark and an image of Crater Lake on the reverse, you might be wondering whether it’s worth more than 25 cents. The short answer is yes — especially if it came from a proof set. Whether you’re a casual collector or someone who just found a coin and wants to know its value, using a reliable coin identifier and value app is a great first step to figuring out exactly what you have.
What Makes the 2005-S Oregon Quarter Special
The 2005-S Oregon State Quarter was struck at the San Francisco Mint exclusively as a proof coin. It was never released into general circulation like the Philadelphia or Denver versions. That “S” mintmark is your first clue that this coin was made with extra care — polished dies, specially prepared planchets, and a mirror-like finish that gives it that beautiful frosted cameo look.
The reverse design features Crater Lake, one of Oregon’s most iconic natural landmarks, surrounded by the state’s outline and the inscription “Oregon – My Valley, Your Valley.” It was part of the hugely popular 50 State Quarters Program that ran from 1999 to 2008.
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Because these were made purely for collectors and sold directly through U.S. Mint proof sets, most examples you find today are still in excellent shape. That said, condition still matters — a lot.
2005-S Oregon Quarter Values by Grade and Type
The 2005-S Oregon Quarter comes in two main versions: the standard clad proof and the 90% silver proof. Both were available through the U.S. Mint, and the silver version carries a significantly higher premium due to its precious metal content.
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Here’s a look at current estimated values:
| Version | Grade | Estimated Value |
|---|---|---|
| Clad Proof | PR65 | $2 – $4 |
| Clad Proof | PR69 Deep Cameo | $8 – $15 |
| Silver Proof | PR65 | $8 – $12 |
| Silver Proof | PR69 Deep Cameo | $18 – $30 |
| Silver Proof | PR70 Deep Cameo | $50 – $100+ |
For a closer look at how similar 2005 proof quarters are trading on the open market, you can check out current market prices for 2005 State Quarters by grade to get a real-time sense of what buyers and sellers are agreeing on right now.
How to Tell If You Have the Silver Version
This is one of the most common questions people ask, and it’s a fair one. Both the clad and silver proofs look very similar at a glance. The easiest way to check is to look at the edge of the coin.
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A clad proof will show a visible copper layer sandwiched between two nickel-coated layers — you’ll see a faint reddish-brown stripe along the edge. A silver proof will have a uniform grayish-white color all the way around with no copper strip.
You can also check the packaging. If you still have the original U.S. Mint box or certificate of authenticity, it will clearly indicate whether you purchased a standard proof set or a silver proof set.
If you’re not sure and don’t want to guess, CoinKnow is a handy tool that can walk you through coin identification step by step, helping you confirm exactly which version you’re holding before you decide whether to sell or hold.
Your Old Coin Could Be Valuable!
Identify It & Know Its Real Value — Free Download
What Affects the Value of Your 2005-S Oregon Quarter
Even among proof coins, not all examples are equal. The biggest value factor is the grade — specifically whether a coin qualifies as PR69 or PR70, and whether it has the “Deep Cameo” or “Ultra Cameo” designation from a grading service like PCGS or NGC.
Deep Cameo coins have that dramatic frosted devices-on-mirror-fields look that collectors go crazy for. A coin that’s been removed from its original packaging, touched with bare fingers, or stored in a humid environment may have hairline scratches that knock it down from PR70 to PR69 — and that difference can mean a significant drop in value.
For a detailed breakdown of 2005 quarter values across all mint marks and conditions, it’s worth bookmarking a reliable reference so you can compare your coin against documented examples.
CoinKnow also offers grading guidance so everyday people — not just professional numismatists — can get a reasonable idea of where their coin might land on the scale.
Your Old Coin Could Be Valuable!
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Should You Get It Professionally Graded
If your 2005-S Oregon Quarter is still sealed in its original U.S. Mint proof set packaging, you’re in good shape. Most collectors value coins like this at near-PR69 levels when unopened.
However, if you’re hoping to sell a single coin for top dollar, professional grading by PCGS or NGC can make a real difference. A certified PR70 Deep Cameo silver proof Oregon quarter can command $75 to $100 or more from the right buyer.
The cost of grading typically runs $20–$40 per coin at standard service levels, so it only makes sense financially if you believe your coin is in exceptional, perfect condition. CoinKnow can help you do a preliminary self-assessment before you commit to that expense.
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Your Old Coin Could Be Valuable!
Identify It & Know Its Real Value — Free Download
FAQ About the 2005-S Oregon State Quarter
Q: Is the 2005-S Oregon Quarter rare?
A: Not exactly rare — the U.S. Mint struck millions for proof sets — but the silver version and high-grade PR70 examples are notably scarcer and carry real collector premiums.
Q: Can I find a 2005-S Oregon Quarter in everyday change?
A: No. The “S” mintmark means it was only made at the San Francisco Mint for proof sets sold directly to collectors, so it never circulated in regular commerce.
Q: Is it worth getting my 2005-S Oregon Quarter graded?
A: Only if the coin is in perfect or near-perfect condition and still in its original packaging. For average proof examples, the grading fee may exceed the premium you’d gain, so evaluate carefully before submitting.
