16 Rare Dime Errors List with Pictures (By Year)

A single 1975 No S Proof Roosevelt dime sold for $506,250 at GreatCollections in October 2024 — the highest price ever paid for a modern dime error. But you don’t need a half-million-dollar coin to profit from rare dime errors. Values across the 16 errors on this list range from $15 for a simple broadstrike to six figures for overdates and missing-mintmark proofs. Below is every error sorted from lowest to highest value, with auction records, identification tips, and the mechanical cause behind each mistake.

1. Roosevelt Dime Broadstrike Error (Up to $15)

A broadstrike happens when the collar die — the ring that holds the planchet during striking — fails to engage. Without confinement, the metal spreads outward under full striking pressure, producing a coin slightly wider than normal with a smooth, featureless edge where reeding should be.

The design itself remains fully present and centered, separating this from an off-center strike. Broadstrikes occur across all denominations, but dimes show the effect clearly because the reeded edge is a standard feature that becomes visibly absent.

Value: Most Roosevelt dime broadstrikes sell for $5 to $15 in circulated grades. Uncirculated examples with sharp details and strong eye appeal push toward $20 to $30 on eBay.

No major auction house has recorded a significant sale for a generic broadstrike dime, keeping this firmly in the affordable-error category. The value ceiling stays low because broadstrikes occur with enough frequency across multiple years that supply comfortably meets collector demand.

How to Identify: Measure the diameter first — a normal Roosevelt dime is 17.91mm with 118 reeds on the edge. A broadstrike will exceed that diameter, often reaching 18.5mm to 19mm, and the edge will be completely smooth.

Weight remains standard at 2.27g for clad issues, which rules out wrong-planchet errors that can mimic the wider appearance. Under a 5x loupe, check that the full design is present on both sides with no missing elements.

If design elements are cut off at the rim, you have an off-center strike instead — a different and usually more valuable error. The fastest confirmation is the smooth edge combined with a wider-than-normal diameter.

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2. Roosevelt Dime Off-Center Strike Error (Up to $100)

An off-center strike occurs when the planchet isn’t seated properly in the collar before the dies close. Part of the design lands on metal while part strikes into empty air, leaving a crescent-shaped blank area on one side and a partial design on the other.

The percentage of off-center determines both visual drama and value — a 5% shift barely registers, while a 50% shift with a visible date turns heads. Unlike broadstrikes, the design is genuinely incomplete here because metal wasn’t present where the die expected it.

Value: Minor off-center dimes (5–10%) trade for $5 to $15. Once the shift reaches 20% or more with the date still visible, prices climb to $30 to $75.

A 50%-plus off-center Roosevelt dime with a readable date can reach $100 in uncirculated condition on eBay. The premium drops sharply if the date is missing, since the coin can’t be attributed to a specific year.

How to Identify: Look for a blank crescent-shaped area on the coin where no design was struck. The struck portion should show normal detail and full depth — not weak or mushy, which would suggest a different problem.

Weigh the coin — it should hit 2.27g for clad or 2.50g for silver, since the full planchet is present even though the design isn’t. Check the edge: the struck side will have reeding, but the unstruck crescent will show a smooth or distorted edge.

Under 10x magnification, genuine off-center strikes show clean flow lines where metal pushed outward, not tool marks. The fastest test is the weight — if it’s correct, the blank area is a strike error, not a clipped planchet.

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3. Roosevelt Dime Missing Clad Layer Error (Up to $150)

Modern Roosevelt dimes are three-layer sandwiches: a pure copper core bonded between two layers of 75% copper / 25% nickel alloy. A missing clad layer means one of those outer layers failed to bond during the strip-preparation stage before the planchet was punched.

The exposed copper core gives one side of the coin a distinctly reddish-brown appearance while the other side looks normal. This happens at the strip mill, not the coining press, making it a planchet error rather than a striking error.

Value: Missing clad layer dimes typically sell for $40 to $150, depending on how complete the layer absence is and the coin’s overall grade. A comparable-era Roosevelt dime with 99% missing obverse and reverse clad layer sold for $129 at Heritage Auctions in 2013.

Bright red copper examples in high mint state grades command the top end of the range. eBay sold listings consistently show $50 to $100 for clearly authentic certified examples.

How to Identify: Weight is the definitive test — a standard clad dime weighs 2.27g. A dime missing one clad layer will weigh noticeably less, typically 1.8g to 2.1g, because the nickel alloy layer is gone.

If your dime looks copper-colored but still weighs 2.27g, it’s environmental damage, not a missing clad layer. Acids, soil exposure, and heat can all turn a normal dime reddish-brown without removing any metal.

Under 10x magnification, a genuine missing clad layer shows a smooth copper surface without the pitting or porosity seen on chemically damaged coins. The fastest confirmation is the scale — weigh it to 0.01g accuracy.

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4. Roosevelt Dime Clipped Planchet Error (Up to $200)

A clipped planchet error starts at the blanking press, not the coining press. When the strip of metal feeds through the blanking machine, the punch is supposed to hit virgin metal each time — but if the strip doesn’t advance far enough, the punch overlaps a previously cut hole, slicing a curved bite from the new planchet.

The resulting blank carries that missing chunk through every subsequent production step. The Blakesley Effect — a weak area on the rim directly opposite the clip — confirms the error is genuine and not post-mint damage.

Value: Small curved clips under 10% sell for $5 to $25 in any condition. Larger clips of 25% or more with full remaining design details and clear Blakesley Effect reach $50 to $150.

Double-clipped dimes, where two bites were taken from the same planchet, command higher premiums due to their visual drama. A 1996-P Roosevelt dime with a double clipped planchet was authenticated by PCGS and graded AU-58, trading well above single-clip examples.

How to Identify: The clip creates a curved indentation that follows the arc of the blanking punch. On a genuine clip, the rim opposite the clip shows the Blakesley Effect — a flat or weak area where metal didn’t flow properly during striking because there wasn’t enough planchet to push against.

Post-mint damage from pliers or vise grips produces a flat, pinched edge without the Blakesley Effect. Under magnification, the clipped edge should show metal flow lines consistent with the blanking process, not rough or jagged marks from mechanical damage.

Weigh the coin — it should be lighter than the standard 2.27g, with the deficit proportional to the size of the clip. The fastest confirmation is the Blakesley Effect on the opposite rim.

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5. 1964-D Roosevelt Dime Doubled Die Reverse Error (Up to $550)

The 1964-D doubled die reverse (FS-801) is one of the most prominent DDR varieties in the Roosevelt series. During die production, the working hub struck the working die in slightly misaligned positions across multiple impressions, creating visible doubling on virtually every reverse element.

The doubling mimics a double strike rotated a degree or two counter-clockwise, affecting “UNITED STATES OF AMERICA,” “ONE DIME,” and “E PLURIBUS UNUM.” This was the last year of 90% silver dimes — Denver struck over 1.35 billion of them, yet only a small fraction came from this particular doubled die.

Value: GreatCollections has sold 25 examples over 16 years, with prices ranging from $16 in XF-45 to $550 in MS-66. A PCGS MS-65 example sold for $285 on eBay in July 2018, and a Heritage Auctions MS-65 described as URS-1 brought a strong premium.

In circulated grades from VF to AU, expect $16 to $100 depending on the visibility of the doubling. MS-64 examples typically trade around $145 at GreatCollections and comparable auction venues.

How to Identify: Focus on the reverse, where the strongest doubling appears in “ONE DIME” — look for a secondary image slightly offset from the primary lettering. “OF AMERICA” shows clear doubling, particularly on the letters A and M.

The motto “E PLURIBUS UNUM” shows subtler doubling, mainly visible in the N of UNUM. Use at least a 7x loupe, as the doubling is not visible to the naked eye on most specimens.

The coin weighs 2.50g (90% silver) and measures 17.90mm with a reeded edge. Distinguish from machine doubling, which shows flat, shelf-like distortion rather than the rounded, equally-raised secondary image of a true doubled die — the fastest confirmation is checking “ONE DIME” under magnification.

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6. 1967 Roosevelt Dime Doubled Die Obverse Error (Up to $600)

The 1967 DDO shows clear doubling on “IN GOD WE TRUST” and the designer’s initials “JS” below Roosevelt’s neck. This was part of the mintmark-free era (1965–1967) when the Mint removed all mintmarks to discourage hoarding, so no mint attribution is possible.

The Philadelphia Mint struck all 2.24 billion 1967 dimes, and the DDO variety came from at least one misaligned hub impression during die production. The doubling on the motto is strong enough to spot with a basic loupe, making this a favorite cherrypicking target in rolls and albums.

Value: A 1967 Roosevelt dime DDO graded AU-53 sold for $600 at auction, setting the benchmark for this variety. In lower circulated grades, examples trade for $50 to $150 depending on doubling visibility and overall eye appeal.

The clad composition keeps raw values modest compared to silver-era doubled dies, where melt value provides a price floor. Certified mint state examples in MS-63 or better would likely command $200 to $400 based on comparable DDO sales from the same period.

How to Identify: Examine “IN GOD WE TRUST” below Roosevelt’s chin — genuine doubling shows as a secondary set of letters slightly offset from the primary inscription, with both images equally raised. Check the “JS” initials below the neck truncation for a similar doubled appearance.

Weight is 2.27g (copper-nickel clad), diameter 17.91mm, with 118 reeds. Machine doubling — which is common and nearly worthless — shows flat, shelf-like displacement rather than true hub doubling.

Under 10x magnification, true DDO letters have rounded, fully formed secondary images, while machine doubling looks like a shadow being dragged to one side. The fastest confirmation is the doubling strength on “WE TRUST,” the most prominent area on this variety.

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7. 1988-D Roosevelt Dime Repunched Mintmark Error (Up to $800)

Before 1990, mintmarks were added to working dies by hand using a steel punch and mallet. If the first blow landed slightly off-target or at the wrong angle, the engraver struck again to correct the position, leaving overlapping impressions in the die steel.

On the 1988-D RPM, the D mintmark was punched at least twice, creating a ghostly doubled D visible on the finished coin. This was near the end of the hand-punching era — the Mint switched to hub-applied mintmarks starting in 1990, eliminating RPMs entirely from future production.

Value: In the best mint state grades, the 1988-D RPM has sold for at least $800. Circulated examples with clearly visible repunching trade for $25 to $75.

Most RPMs across all denominations sell for $5 to $30 in circulated grades, so the $800 ceiling on this particular variety reflects above-average doubling clarity. Certification by PCGS or NGC significantly helps resale value.

How to Identify: Look at the D mintmark above the date on the obverse. Under 7x to 10x magnification, you should see evidence of a second impression — typically a partial D offset to one side.

The secondary image may appear thinner and slightly higher or lower than the primary D. Weight is 2.27g, diameter 17.91mm, reeded edge with 118 reeds.

Distinguish from die deterioration doubling, which affects the entire design and appears mushy rather than showing a distinct second punch — also rule out strike doubling, where flat shelf-like effects appear across many design elements rather than just the mintmark. The fastest confirmation is a clear secondary D image at a different angle or position from the primary mintmark.

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8. 1982 Roosevelt Dime No P Mintmark Error (Up to $2,185)

In 1980, the Philadelphia Mint began adding a “P” mintmark to dimes for the first time. Two years later, a single obverse die left the production line without the P punch, and nobody caught it.

PCGS estimates the die struck roughly 75,000 coins before wearing out. Two varieties exist: Strong Strike shows crisp details with clear date-to-rim separation, while Weak Strike has a faint “2” positioned closer to the rim — a standard roll holds 47–48 Strong Strike coins versus 50–51 Weak Strikes due to the thickness difference.

Value: The auction record is $2,185 for a Strong Strike graded PCGS MS-68, sold in 2004. Circulated examples in AU condition typically sell for $55 to $100 depending on surface quality.

Uncirculated coins in MS-63 to MS-65 range from $175 to $429, with a PCGS MS-65 FB recently listed at $429. The Strong Strike variety commands a consistent premium over the Weak Strike at every grade level due to superior detail clarity.

How to Identify: Check the obverse above the date, near Roosevelt’s neck truncation — a normal 1982 Philadelphia dime has a small “P” there. The error coin has no mintmark at all, and the space is blank.

Do not confuse this with 1982-D dimes or pre-1980 Philadelphia dimes, which never had mintmarks. To distinguish Strong from Weak Strike, examine the “2” in the date: on the Weak Strike, it’s faint and closer to the rim.

Weight is 2.27g, diameter 17.91mm, reeded edge with 118 reeds. Under magnification, check that the mintmark area doesn’t show a filled or polished-away mark, which could indicate an altered coin — the fastest confirmation is the completely blank area where the P should be.

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9. 1970 Roosevelt Dime No S Proof Error (Up to $6,038)

Proof dies were prepared at the Philadelphia Mint and shipped to San Francisco for striking. During die preparation, someone skipped the S mintmark punch — or a weak punch was polished away during die finishing — and the unmarked die went into production.

PCGS estimates approximately 2,200 No S proof dimes were struck before the error was caught, representing about 0.08% of total 1970-S proof production. This is the second occurrence of a missing S on a proof dime, following the 1968 No S.

Value: The PCGS auction record is $6,038 for a PR-69 CAM sold at Heritage Auctions on May 5, 2004. A PR-67 Cameo brought $847 at GreatCollections more recently.

Standard PR-67 examples without cameo contrast trade around $750, while PR-69 coins approach $1,150 and cameo examples carry significant premiums with a PR-69 CAM valued at approximately $3,600. PCGS estimates roughly 500 examples survive across all grades, which keeps prices elevated but accessible compared to the ultra-rare 1968 and 1975 No S proofs.

How to Identify: This is a proof coin, so it should exhibit mirror-like fields and frosted design elements — not the satin or lustrous finish of a business strike. Examine the obverse above the date: a normal 1970-S proof has a clear “S” mintmark, while the error coin has nothing.

The coin weighs 2.27g (copper-nickel clad) with 118 reeds. Because altered coins exist where the S has been physically removed, authentication by PCGS or NGC is essential before paying proof-error prices.

Under 20x magnification, a tooled or ground-away mintmark shows disturbed metal flow and small scratches, while a genuine No S has a smooth, undisturbed field in the mintmark area. The fastest confirmation is professional certification.

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10. 1983 Roosevelt Dime No S Proof Error (Up to $10,560)

The 1983 No S is the third and final missing-mintmark proof dime in the Roosevelt series. Like the 1968 and 1970 errors, it resulted from a proof die leaving the Philadelphia preparation facility without receiving its S punch before being shipped to San Francisco for striking.

The error went undetected through the entire proof set production and packaging process, reaching collectors inside sealed proof sets. PCGS and NGC have certified approximately 500 total examples across all grades, and most exhibit Deep Cameo surfaces — the standard finish for 1980s proof production.

Value: The all-time auction record is $10,560 for a PCGS PR-70 DCAM sold in 2014. An NGC PR-70 Ultra Cameo brought $3,840 in 2020.

PR-69 DCAM examples, which represent the bulk of certified survivors, typically sell for $750 to $764. The PR-70 is the trophy grade — only about nine coins have achieved it at PCGS, creating intense competition among registry set collectors.

How to Identify: Confirm the coin is a proof first — it should have deeply mirrored fields and sharply frosted devices with a strong cameo contrast. Check the obverse above the date for the absence of an S mintmark.

Weight is 2.27g with a reeded edge. All 1983 proof dimes should have the S mintmark, and its absence is the error — the Deep Cameo surfaces on most survivors make the mintmark area clearly visible against the mirror field.

As with all No S proof errors, PCGS or NGC certification is mandatory before any serious transaction because altered coins with removed mintmarks exist in the market. The fastest confirmation is third-party certification.

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11. 1965 Roosevelt Dime Silver Transitional Error (Up to $13,200)

In 1965, the Mint switched dime production from 90% silver to copper-nickel clad as rising bullion prices caused mass hoarding. During the changeover, some leftover silver planchets intended for 1964 production remained in press hoppers at Philadelphia and were struck with 1965-dated dies.

The result is a 1965 dime made of 90% silver instead of standard clad — a coin that should not exist under normal protocols. Only a handful of authenticated examples survive, placing this error alongside the famous 1943 bronze cents as a transitional wrong-planchet rarity.

Value: An MS-61 example sold for $13,200 at Heritage Auctions in January 2023, setting the current high mark. An AU-58 brought $12,600 at Heritage in March 2024, confirming strong sustained demand.

The Poulos Family Collection specimen graded MS-62 realized $9,000 at Heritage in 2019. Most authenticated examples sell between $3,000 and $13,200 depending on condition — the few dozen confirmed coins make this a genuinely scarce error with consistent buyer interest from both error specialists and Roosevelt dime collectors.

How to Identify: Weight is the primary diagnostic — a clad 1965 dime weighs 2.27g, while a silver 1965 dime weighs approximately 2.50g. That 0.23g difference is detectable on any precision scale measuring to 0.01g.

Check the edge: a clad dime shows a visible copper core sandwiched between nickel layers, appearing as a reddish stripe, while a silver dime has a uniform silver-colored edge with no copper stripe. Do not rely on surface color alone, as toning and environmental damage can mislead.

Professional authentication by PCGS, NGC, or ANACS is essential before selling. The fastest confirmation is weighing the coin — 2.50g means silver.

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12. 1999-D Roosevelt Dime Wrong Planchet Error (Up to $14,375)

This error occurred when a Lincoln cent planchet — copper-plated zinc, smaller and lighter than a dime blank — was fed into a Roosevelt dime press at the Denver Mint. The dime dies struck the undersized blank, producing a coin with Roosevelt’s design on a copper-colored, cent-sized planchet.

Only two examples of the 1999-D dime-on-cent-planchet are known. Due to the metal mismatch, strange toning colors formed on the surfaces, ranging from violet and blue-green to orange and gold — a visual effect unique to this error.

Value: A specimen graded MS-65 Brown sold for $14,375 at Heritage Auctions in January 2009, the highest recorded price. Another example brought $6,325 at Heritage in mid-2015.

The extreme rarity — only two confirmed examples — keeps demand far ahead of supply at every price level. Market value reflects multiple compounding error factors: wrong planchet composition, broadstrike characteristics from the undersized blank, and gem-quality preservation with unusual toning colors.

How to Identify: The coin looks immediately wrong — it’s copper-colored rather than silver-toned, smaller than a standard dime, and weighs approximately 2.5g (the weight of a modern cent planchet) rather than 2.27g. The design may show areas where metal didn’t fully fill the die because the planchet was too small.

Edge examination reveals no reeding, since the blank was plain-edged like a cent. This is not the same as a missing clad layer error, which retains correct diameter and weight near 2.27g.

Professional certification is required, as copper-plated dimes from environmental damage are common fakes. The fastest confirmation is the combination of cent weight, copper color, and full dime design.

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13. 1968 Roosevelt Dime No S Proof Error (Up to $48,875)

The 1968 No S proof dime is the first missing-mintmark proof error in the Roosevelt series. At least one proof obverse die was prepared at Philadelphia without receiving its S punch before shipment to San Francisco.

The unmarked die struck proof coins that were packaged into 1968 proof sets and distributed to collectors before anyone noticed. An estimated 12 to 24 examples exist — PCGS has certified 18 total: 12 as brilliant proofs and 6 as Cameo proofs, with no Deep Cameo example ever certified.

Value: The auction record is $48,875 for a PCGS PR-68 Cameo sold at Heritage Auctions in September 2006. A PR-69 (non-Cameo) brought $45,600 at Heritage in December 2021, and a PR-68 realized $31,102 at GreatCollections in April 2015 during the Cigarra Collection sale.

Recent sales range from $16,800 for a PR-67 to $22,325 for a PR-68. The Cameo designation adds roughly 57% more value at the same grade level, and no Deep Cameo example has ever been certified by PCGS.

How to Identify: This must be a proof coin from a 1968 proof set — mirror fields, frosted devices, sharp strike. Check the obverse for the complete absence of an S mintmark above the date.

Weight is 2.27g, diameter 17.91mm, reeded edge with 118 reeds. Since the error coin was struck at San Francisco using proof dies, it must exhibit full proof characteristics — any coin that looks like a business strike is not this error.

Under 40x magnification, the field where the S should be must show pristine proof surfaces with no tooling marks or evidence of metal removal. The fastest confirmation is professional authentication by PCGS or NGC.

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14. 1942/1-D Mercury Dime Overdate Error (Up to $73,438)

The Denver Mint made the same hubbing mistake as Philadelphia in 1942. A working die was first impressed by a 1941-dated hub, then a 1942-dated hub, leaving traces of the 1 visible beneath the 2 in the date.

Denver’s mintage was 60,740,000 — far less than Philadelphia’s 205 million — making the D-mint overdate scarcer in absolute numbers. The variety was recognized alongside its Philadelphia counterpart shortly after its 1943 discovery and has been listed in standard references since 1945.

Value: The top recorded price is $73,438 for an MS-66 FB example. The PCGS auction record for Full Bands is $40,800 for an MS-66 FB sold at Heritage in May 2024.

In circulated grades, the 1942/1-D trades from $300 in Fine-12 to $925 in XF-40. An AU-58 brought $3,360 at Heritage in May 2024 — Full Bands examples consistently carry significant premiums over non-FB coins.

How to Identify: Examine the date closely under at least 7x magnification — the bottom of the numeral 1 from 1941 should be visible protruding to the left of and below the numeral 2 in 1942. The doubling may also be faintly visible on other date digits.

The coin weighs 2.50g (90% silver), measures 17.90mm, and has a reeded edge. For Full Bands attribution, examine the reverse fasces where the two horizontal bands must show complete separation.

Counterfeits exist, particularly cast copies that lack the sharp die characteristics of a genuine struck coin. The fastest confirmation is the undertype 1 visible beneath the 2 in the date.

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15. 1942/1 Mercury Dime Overdate Error (Up to $120,000)

Discovered in 1943 by collector Arnold Kohn of Kingston, New York, the 1942/1 Mercury dime overdate is one of the most famous die varieties in American numismatics. A working die was impressed by a 1941-dated hub and then re-impressed by a 1942-dated hub, creating a doubled die and overdate in a single coin.

The Philadelphia Mint struck 205,432,329 dimes that year. Nearly 25% of all 1942 Mercury dimes submitted to PCGS are the overdate variety, though that reflects submission incentive rather than actual production ratios.

Value: The auction record is $120,000 for an MS-66 Full Bands example sold at Heritage Auctions in January 2018 — PCGS has slabbed only eleven at MS-66 FB, with nothing finer. An MS-66 overdate designated FS-101 brought $102,000 at a separate Heritage sale.

An MS-67 without Full Bands realized $90,000, proving the overdate premium alone drives six-figure prices. In circulated grades, prices start at approximately $350 in Fine-12 and reach $700 in XF-45.

How to Identify: Under 5x to 7x magnification, look at the date — a doubled 4 has a notch at the top and behind the base. Traces of the 1941 undertype are visible on other date digits, and clear doubling appears on the motto IN GOD WE TRUST and the Y in LIBERTY.

Die markers include a diagonal die polish line extending from the crossbar of the 4 to the rim and a reflective area behind Liberty’s neck. On the reverse, a thin die polish line runs from the left side of the fasces base to the olive branch stem.

The coin weighs 2.50g with a reeded edge. The fastest confirmation is the doubled 4 with its distinctive notch at the top.

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16. 1975 Roosevelt Dime No S Proof Error (Up to $506,250)

Only two examples of the 1975 No S proof dime are known to exist. The San Francisco Mint produced 2.84 million proof sets that year — all supposed to bear the S mintmark — but at least one proof die escaped without the S punch.

Both known coins were discovered in California by the same person and sold to Chicago dealer F.J Vollmer & Co in 1978 and 1979. The variety is ranked as the #1 modern U.S. coin issue in the 100 Greatest U.S. Modern Coins reference.

Value: One example graded PCGS PR-67, CAC approved, sold for $506,250 at GreatCollections in October 2024 — a new all-time record. The consigning family had purchased it in 1978 for $18,200, making the return nearly 28x over 46 years.

The only other known example sold for $349,600 in 2011 and $456,000 in 2019. Over 200 bids were placed and 400 unique bidders tracked the 2024 auction.

How to Identify: This coin exists only in proof condition from 1975 proof sets — it must exhibit deeply mirrored fields, frosted devices, and a sharp strike with full proof characteristics. The obverse should show no S mintmark above the date, with the space completely blank and undisturbed.

Weight is 2.27g (copper-nickel clad), diameter 17.91mm, reeded edge with 118 reeds. Only two examples are known, so the chances of finding one are essentially zero — but 1975 proof sets do change hands regularly at shows and online auctions.

Under high magnification, the mintmark area must show pristine proof surfaces with no evidence of tooling or removal. If you believe you have one, do not clean or handle it further — the fastest confirmation is professional certification by PCGS or NGC.

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Conclusion

The errors on this list range from $15 broadstrikes that turn up in dealer junk bins to a $506,250 proof dime that drew bidders from three continents. Most collectors will never hold a 1975 No S, but the 1982 No P mintmark error still appears in circulation, and doubled dies from the 1960s sit unattributed in collections everywhere. A digital scale, a decent loupe, and some patience remain the cheapest tools in the hobby.