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June 9, 2026Let me be honest with you: I’ve made every single one of these mistakes myself. After decades of sorting through Washington quarters — from BU rolls of 1955-Ds to 1964-Phillys — I’ve watched newcomers and seasoned collectors alike fall into the same expensive traps. Whether you’re hunting for RPMs, VAMs, or just trying to build a smart collection, understanding these pitfalls will save you hundreds, if not thousands, of dollars. So let’s talk about the five most costly mistakes in Washington quarter variety collecting — and how to avoid every one of them.
Introduction: Why Washington Quarters Are a Minefield for New Collectors
The Washington quarter series, spanning from 1932 to the present day, is one of the most collected series in all of American numismatics. The 1932-D and 1932-S quarters are legendary key dates, but the series is also riddled with fascinating varieties — Repunched Mintmarks (RPMs), doubled dies, and machine doubling that can fool even experienced eyes.
Just recently, a fellow collector posted in a forum about pulling what he believed was a 1963-D RPM and a 1961-D RPM FS-502 from a batch of BU rolls. The excitement was palpable. But as the thread unfolded, a veteran collector had to gently point out that both finds were actually machine doubling — not true RPMs. That distinction? It’s the difference between a coin worth a few cents over face value and one potentially worth hundreds of dollars. Let that sink in for a moment.
This post is dedicated to the five most expensive mistakes collectors make when searching for Washington quarter varieties — and how you can sidestep every single one.
Mistake #1: Confusing Machine Doubling With True RPMs and Doubled Dies
This is, without question, the single most common and most costly mistake in Washington quarter variety collecting. I’ve examined thousands of quarters brought to me by excited collectors who believed they’d struck gold, only to find the telltale signs of machine doubling. Let me explain the difference once and for all.
What Is Machine Doubling?
Machine doubling (sometimes called “mechanical doubling” or “strike doubling”) occurs when the die bounces or vibrates slightly during the striking process. The result is a flat, shelf-like displacement of metal on the affected letter or design element. It looks like someone took a chisel and carved a thin, flat ledge off the side of the letter. It adds no extra detail — it simply displaces metal.
What Is a True Repunched Mintmark (RPM)?
A true RPM occurs when a mint employee punches the mintmark into the die more than once, and the second (or third) punch is slightly offset from the first. When the die strikes a coin, you see two or more distinct, overlapping images of the mintmark. The key difference is that an RPM shows actual extra detail — a secondary letter that has its own shape, its own edges, and its own character. It’s not a flat shelf; it’s a second, slightly offset “D” or “S” sitting beneath or beside the primary mintmark.
How to Tell The Difference
Here’s a quick diagnostic checklist I use every time I examine a potential variety:
- Look for flatness: If the doubling appears as a flat, shelf-like ridge with no detail underneath, it’s almost certainly machine doubling.
- Check for overlapping detail: A true RPM will show a complete or near-complete second mintmark with its own edges and shape, not just a smeared or flattened extension.
- Use proper magnification: A 10x loupe is the bare minimum. For RPM work, I recommend 15x-20x to clearly see the separation between primary and secondary mintmark punches.
- Consult reference images: The CONECA RPM Files and variety references like those from Rick’s Washington Quarters site provide clear photographs of confirmed varieties. Compare your coin side by side.
- Examine the entire coin: Machine doubling often appears on multiple letters and design elements simultaneously because it’s a result of die movement during the strike. A true RPM will be isolated to the mintmark (or in the case of a doubled die, to specific design elements that were on the affected die).
In the forum thread I referenced earlier, the collector’s first find — a 1963-D showing what appeared to be a D/D RPM — was identified by experienced members as machine doubling due to its “flat & shelf-like appearance.” The second find, a 1961-D believed to be an FS-502, was also determined to be machine doubling when examined closely. The example image posted in the thread showing a genuine 1961-D RPM FS-502 alongside machine doubling perfectly illustrates how subtle the difference can be to untrained eyes.
Pro Tip: Before you spend a single dollar on a “variety” quarter, invest in a quality loupe and a good reference guide. The $30 you spend on education will save you $300 in misidentified machine doubling.
Mistake #2: Buying Cleaned Coins Without Knowing It
This mistake has haunted collectors for generations, and it’s especially damaging in the Washington quarter market where original, uncleaned surfaces are critical to both numismatic value and collectibility. I cannot tell you how many times I’ve seen a beautiful, brilliant quarter that turned out to be a formerly dull, tarnished coin that someone scrubbed, dipped, or otherwise altered to look “better.”
Why Cleaned Coins Are a Problem
Professional grading services like PCGS and NGC will downgrade or flag cleaned coins. A 1963-D quarter that might grade MS-65 in original, mint-condition surfaces might only grade “AU Details — Cleaned” if it’s been wiped with an abrasive cloth or dipped in acid. The difference in value can be 90% or more. For variety coins, the problem is even worse: a cleaned coin loses its original luster, which is one of the key diagnostic features for confirming that a rare variety is genuine and not post-mint damage.
How to Spot a Cleaned Coin
Here are the warning signs I look for:
- Unnatural brightness: If a silver quarter looks too white, too uniform, or almost “bleached,” it’s likely been dipped. Original silver surfaces carry subtle toning and a cartwheel luster that doesn’t disappear when you tilt the coin under light.
- Hairline scratches: Under magnification, cleaned coins often show tiny parallel scratches from wiping or polishing. These are the dead giveaway of a coin that’s been rubbed with a cloth or abrasive.
- Flat, dead luster: Original mint luster has a distinctive “flow” pattern — it radiates from the center of the coin outward along the lines of metal flow during striking. Cleaned coins lose this flow and appear flat or dull under angled light.
- Uneven color and patchy patina: If a coin has areas of different toning or color, it may have been selectively cleaned — someone tried to remove a spot or streak but left the rest of the surface untouched.
- Overly sharp details with dull surfaces: This is a red flag for “whizzing” — a process where a wire brush is used to make a circulated coin look uncirculated. The details appear sharp, but the surfaces are destroyed, and the eye appeal is ruined.
The best defense against buying cleaned coins is to buy only professionally graded coins for significant purchases, and to develop your own eye by examining known-original coins at shows and dealers’ tables. There is no substitute for handling hundreds of coins and learning what authentic luster and patina look like in person.
Mistake #3: Overpaying for Common Dates in the Hype of the Hunt
When you’re excited about searching through rolls of Washington quarters, it’s easy to lose perspective on what things are actually worth. I’ve seen collectors pay $50 for a common-date 1963-D quarter in MS-64 condition because they were caught up in the excitement of the search — only to discover later that the same coin can be purchased from any dealer for $5-$8.
Understanding Washington Quarter Values
The Washington quarter series has a clear hierarchy of value:
- Key dates: 1932-D, 1932-S — these are genuinely scarce and command significant premiums even in low grades.
- Semi-key dates: Early silver issues (1932-1940) in high grades, certain war-era dates, and some mintmarked issues from the 1930s and 1940s.
- Variety coins: Confirmed RPMs, doubled dies, and other die varieties that are listed in recognized references (CONECA, Cherrypickers’ Guide, etc.).
- Common dates in high grade: Modern Washington quarters (1965-present) in MS-67 or MS-68 can carry premiums, but common silver dates (1955-1964) in typical uncirculated grades (MS-63 to MS-65) are abundant and inexpensive.
- Common dates in average grade: The vast majority of 1955-1964 quarters fall here. They’re worth their silver melt value plus a small premium — typically $3-$6 each.
The Common Date Trap
The forum thread that inspired this post is a perfect example. The collector was working through BU rolls of 1955-1964 Denver and Philadelphia quarters — dates that are, frankly, among the most common silver coins in existence. Millions were saved as the last silver quarters, and they sat in bank vaults and family collections for decades. Finding an RPM in this era is exciting, but finding a common date in BU grade is… well, it’s finding a common coin. Don’t let the thrill of the hunt convince you that every bright, shiny quarter is a treasure.
Before you pay a premium for any Washington quarter, check recent auction results on Heritage Auctions, eBay sold listings, or the PCGS Price Guide. If a coin is selling for $5 at every major dealer, it’s probably not worth $50 just because you found it yourself in a roll.
Mistake #4: Trusting Bad Holders and Questionable Grading
This mistake is particularly insidious because it preys on trust. We all want to believe that the coin in the slab is accurately graded and properly identified. But the reality is that the coin grading world includes a wide range of quality, and some holders are simply not trustworthy.
The Grading Service Hierarchy
In my experience, the following is a rough hierarchy of grading service reliability:
- Tier 1 (Fully Trusted): PCGS and NGC — the two major services with the strictest grading standards and the best market acceptance.
- Tier 2 (Generally Trusted): ANACS (especially older holders) — ANACS has a solid reputation, though their older holders sometimes contain coins that would grade differently by today’s standards.
- Tier 3 (Questionable): ICG and other smaller services — these can be inconsistent, and the market often applies a discount to their grades.
- Tier 4 (Untrusted / “Rattlers” and novelty holders): Any holder from a company you’ve never heard of, including the infamous “SGS” (which has been exposed for assigning absurd grades like MS-70 to obviously circulated coins), and similar novelty slabs.
Why Holders Matter for Variety Coins
For variety collecting, the holder is even more important than usual. When you buy a coin labeled as a specific RPM or doubled die variety, you’re paying for two things: the coin’s condition and the attribution of the variety. If that attribution is wrong — if the coin is actually machine doubling, or if the variety number is misidentified — you’ve paid a premium for nothing. PCGS and NGC both offer variety attribution services, and their attributions are generally reliable. But even they make mistakes, which is why I always recommend verifying the variety yourself before making a significant purchase.
Old Holders and Reholdering
Another common issue is the old holder problem. PCGS and NGC have both tightened their grading standards over the years. A coin that was graded MS-65 in a PCGS “rattler” holder from the late 1980s might only grade MS-64 by today’s standards. If you’re buying an old-holdered coin, factor in the possibility that the grade is inflated and be prepared to pay a price that reflects the coin’s likely grade in a modern holder.
Mistake #5: Falling for Marketing Hype and Unrealistic Promises
The coin market is full of marketing, and Washington quarters are no exception. From eBay listings that scream “RARE 1963-D RPM!!!” (when the coin is machine doubling) to dealers who charge exorbitant premiums for “investment-grade” coins that are anything but, the hype can be overwhelming for new collectors.
Common Marketing Traps
Here are the marketing tactics I’ve encountered most frequently:
- “Rare” varieties that aren’t: Some dealers list common machine doubling as RPMs, knowing that new collectors won’t know the difference. If a listing says “RPM” but doesn’t cite a specific CONECA or FS number, be very suspicious.
- Inflated grades: A coin labeled “MS-67” by an unknown grading service is not the same as an MS-67 from PCGS or NGC. Always verify the grading service and be skeptical of grades that seem too good to be true.
- “Last chance” and “limited time” pressure: Urgency is a sales tactic, not a numismatic reality. The coin market doesn’t work that way. If a coin is genuinely rare and desirable, it will still be available tomorrow — and if it’s not, it probably wasn’t worth buying anyway.
- Investment guarantees: No one can guarantee that a coin will appreciate in value. The coin market fluctuates, and many coins — especially common dates — never significantly outpace their purchase price. Anyone promising guaranteed returns is selling something other than numismatic value.
How to Protect Yourself
The best protection against marketing hype is education and patience. Before you buy any variety coin:
- Research the specific variety using authoritative references (CONECA, Cherrypickers’ Guide, the A Guide Book of United States Coins).
- Compare your coin to confirmed examples in photographs.
- Get a second opinion from an experienced collector or dealer you trust.
- Buy from reputable sellers with return policies.
- Never buy a coin you haven’t examined closely yourself (or haven’t had examined by someone you trust).
Bonus: The Importance of Proper Tools and Education
I want to emphasize something that ties all five of these mistakes together: the vast majority of costly errors in coin collecting are preventable with proper tools and education. You don’t need to spend a fortune, but you do need to invest in the basics.
Essential Tools for Washington Quarter Variety Collecting
- A quality loupe: 10x triplet loupe (such as a BelOMO or Hastings) — approximately $20-$40.
- A good reference library: At minimum, the Cherrypickers’ Guide to Rare Die Varieties and access to the CONECA RPM Files online.
- Proper lighting: A daylight-balanced LED lamp makes a huge difference in seeing surface details and detecting cleaning.
- A stable work surface: A padded desk or coin examination mat to prevent accidental damage to coins you’re examining.
Where to Learn
Some of the best education in numismatics is free:
- Coin forums: Communities like CoinTalk, the PCGS Forum, and Reddit’s r/coins are full of experienced collectors who are happy to help identify varieties and spot problems.
- Local coin clubs: Nearly every city has a coin club, and the members are often incredibly generous with their knowledge.
- Books: Your local library may have numismatic references, and many foundational books are available used for very little money.
- Shows: Attending coin shows lets you examine thousands of coins in person and talk to dealers and collectors face to face.
Conclusion: The Enduring Appeal of Washington Quarter Variety Collecting
Despite all the pitfalls I’ve outlined in this article, I want to be clear: Washington quarter variety collecting is one of the most rewarding pursuits in all of numismatics. The series is long, richly documented, and full of genuine rarities that can be found in everyday pocket change, estate purchases, and bank rolls. The 1932-D and 1932-S quarters remain iconic keys to the series, and die varieties from every era — from the early silver issues through the clad era — offer endless opportunities for discovery.
The Washington quarter itself is a piece of American history. Designed by John Flanagan and first issued in 1932 to commemorate the bicentennial of George Washington’s birth, the coin has been a staple of American commerce for over 90 years. Its design has evolved — from the original silver composition through the copper-nickel clad era of 1965 and beyond, including the State Quarters program of 1999-2008, the America the Beautiful series, and the upcoming American Women Quarters — but the basic motif of Washington’s profile has endured as one of the most recognized images in American coinage.
For variety collectors, the Washington quarter series offers something that few other series can match: a combination of accessibility, historical depth, and genuine scarcity in specific varieties. A confirmed 1961-D RPM FS-502 in MS-65 condition is a real coin with real value — and finding one in a roll of BU quarters is a thrill that never gets old. The key is knowing the difference between a genuine find and a machine-doubled common coin, between an original surface and a cleaned one, between a fair price and an inflated one.
Avoid the five mistakes I’ve described — confusing machine doubling with true varieties, buying cleaned coins, overpaying for common dates, trusting bad holders, and falling for marketing hype — and you’ll be well on your way to building a collection that is both personally satisfying and financially sound. The coins are out there. The knowledge is available. All that’s required is patience, education, and a willingness to learn from the mistakes that every collector makes along the way.
Happy hunting, and may your next roll yield a genuine variety worthy of the find.
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