Rare 2021 Dime Errors Worth Money (Full List With Pictures)

A 2021 Roosevelt dime struck on a wrong planchet could fetch up to $5,000 at auction in mint state. This 2021 dime error list covers 15 known varieties, with values ranging from $5 die clashes to four-figure wrong planchet strikes.

Philadelphia produced over 1.3 billion dimes that year and Denver added another 1.4 billion, so there were plenty of chances for something to go wrong. Here is what to look for and what each error actually sells for.

1. 2021 Dime Die Clash Error (Up to $50)

Die clash errors happen when the obverse and reverse dies slam together with no planchet between them. The collision transfers ghost images from one die onto the other, and every subsequent coin struck by that damaged die pair carries faint impressions of the opposite side’s design.

On 2021-P dimes, you might see a faint torch outline near Roosevelt’s cheek or a phantom jawline near the reverse lettering. The Error Coin Information Exchange estimates roughly 1 in 20,000 2021 dimes carry some degree of clash marks, making this one of the more common error types that year.

Value: Most circulated 2021 die clash dimes sell for $5 to $15 on eBay, depending on how visible the ghost impressions are. Strong clashes with clear design transfer in higher grades push into the $20 to $50 range. No major auction house has featured a 2021 die clash dime as a standalone lot — these typically move through eBay fixed-price listings or small error lots, such as a 12-coin US error lot including die clashes that sold for $17.76 in 2025.

How to Identify: Tilt the coin under a desk lamp at a low angle and examine the fields — the flat areas between design elements. Ghost impressions from the opposite die appear as faint raised outlines that do not match the intended design on that side.

On the obverse, look for traces of the torch or horizontal bands near Roosevelt’s cheek. On the reverse, check the field around the torch for faint profile outlines.

Use a 10x loupe for confirmation. Die clash marks are always raised, never incised — post-mint contact damage leaves random scratches that cut into the surface, which is the opposite of a clash mark’s raised profile.

These marks appear consistently across multiple coins from the same die pair. If you see the same ghost image on two different 2021 dimes, that confirms a legitimate die clash.

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2. 2021 Dime Lamination Error (Up to $100)

Lamination errors occur when the cupronickel cladding develops internal flaws — air pockets, impurities, or weak bonding between the clad layer and copper core. Under striking pressure, these weak spots crack, bubble, or peel without fully detaching, leaving a flaky scab or split in the metal surface.

This differs from a missing clad layer error, where an entire side’s cladding is absent before striking. On 2021 dimes, lamination errors tend to show up as small peeling strips or raised flaps, usually near high-relief areas like Roosevelt’s hair and jawline.

Value: Ungraded circulated 2021 lamination dimes typically list on eBay for $0.99 to $10, with most selling in the $3 to $8 range. Larger peels covering significant surface area push values to $15 to $40. Uncirculated examples with clearly visible lamination flaps in prominent locations have sold for $50 to $100 among specialized error collectors. No PCGS or NGC-graded 2021 lamination dime has appeared at a major auction house as of mid-2026.

How to Identify: Look for areas where the metal surface appears split, raised, or peeling — like a blister that partially lifted. The affected area should have the same color as the surrounding metal, unlike corrosion which typically discolors the surface.

Run your fingernail across the suspected area. A genuine lamination flaw has a raised edge you can catch, and under a 10x loupe the exposed underlayer should show a consistent copper color.

If the exposed metal looks pitted or rough, it is more likely post-mint damage. Weigh the coin on a digital scale — a standard 2021 dime weighs 2.268 grams.

A lamination error should weigh very close to standard, while a missing clad layer error weighs around 1.8 grams. That weight difference is the fastest way to distinguish the two.

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3. 2021 Dime Excess Metal Blob Error (Up to $120)

Excess metal blob errors form when stray metal fragments contaminate the striking chamber or when damaged die areas trap and release metal unpredictably. The result is a raised, irregular lump that does not correspond to any part of the intended design, varying in shape from teardrops to ovals to amorphous masses.

On 2021-P dimes, a documented variety shows a teardrop-shaped blob positioned directly above the “DI” in “DIME” on the reverse. This error type is sometimes grouped with die chips, though the formation mechanism differs slightly.

Value: Small, subtle blobs on circulated 2021 dimes sell for $5 to $15 online. Larger blobs in prominent locations — especially on Roosevelt’s face or near the torch — bring $20 to $45 in circulated grades.

Uncirculated examples with clearly visible metal masses have sold for $60 to $120 through eBay and specialized error coin dealers. Coins combining an excess metal blob with another error type command additional premiums.

How to Identify: Scan both sides of the coin under a desk lamp, focusing on the fields between design elements. Blobs appear as raised lumps that do not match Roosevelt’s portrait, the torch, or the lettering, and they should have the same color and surface finish as the surrounding coin.

If a raised area looks different in color or texture, it is likely post-mint contamination such as glue, solder, or corrosion. Use a 10x loupe to examine the edges of the blob — genuine struck-in blobs merge smoothly into the coin’s surface because they were pressed in during minting.

Post-mint deposits sit on top with a visible boundary line. Try nudging the suspected blob gently with a wooden toothpick — if it flakes off, it is contamination, and if it is integral to the metal, you likely have a genuine error.

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4. 2021 Dime Rim Damage/Finning Error (Up to $150)

Finning became one of the most frequently reported defects on 2021-P dimes, caused by the striking die applying excessive pressure or contacting the planchet at an incorrect angle. The result is a rough, ledge-like ridge along the outer edge that feels distinctly different from a standard dime’s smooth rim.

Many 2021 Philadelphia dimes show finning on both the obverse and reverse, suggesting the issue stemmed from misaligned feeder fingers rather than a single defective die. The error appeared in high enough volume to catch the attention of collectors nationwide that year.

Value: Circulated 2021 dimes with minor finning sell for $5 to $15 on eBay. Examples with prominent double-sided finning bring $20 to $50, particularly when professionally graded.

Uncirculated specimens with dramatic finning have sold for $75 to $150 at specialized error coin auctions. Supply keeps prices modest — even strong examples rarely break the $150 ceiling without additional errors present on the same coin.

How to Identify: Run your finger along the coin’s outer edge. Finning creates a raised ridge that feels like a small shelf extending beyond the normal rim — the difference from a standard dime is obvious by touch alone.

Under a 10x loupe, the finning appears as extra metal extending past the normal rim boundary. Compare directly to a regular 2021 dime to calibrate your eye.

Pay attention to areas near “IN GOD WE TRUST” and “LIBERTY” on the obverse, which showed the most frequent finning across the 2021-P run. Check both sides — double-sided finning is worth more than single-sided.

Use calipers to measure thickness at the rim versus the center, since finned rims are measurably thicker. The fastest confirmation is the fingernail test: if your nail catches a ledge at the rim that a normal dime lacks, you have finning.

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5. 2021 Dime Die Crack (Spike Head) Error (Up to $200)

Die crack errors develop when steel dies deteriorate from repeated striking, transferring raised lines onto every subsequent coin. The “spike head” variety gets its name from a prominent crack extending from the back of Roosevelt’s skull, creating what looks like someone stuck a spike into his head.

On 2021-P dimes, this crack runs from the rim area down to Roosevelt’s temple. Earlier strikes from the same die show thin, barely visible lines while later strikes display thicker, more dramatic cracks as the damage worsened.

Value: Common die crack errors on circulated 2021-P dimes sell for $10 to $25 depending on crack prominence. The spike head variety specifically commands $35 to $75 from interested buyers due to its dramatic visual appeal.

Well-preserved examples with bold, clearly visible die cracks in mint state condition have reached $100 to $200 at specialized coin auctions when professionally authenticated and graded by PCGS or NGC.

How to Identify: Focus on the area directly behind Roosevelt’s head, near where his neck meets the back of his skull. The die crack appears as a raised line or protrusion extending outward from the portrait.

The crack will have the same luster and finish as the rest of the coin’s surface — this is the key distinction. Scratches from circulation are shiny and cut into the coin, while genuine die cracks are raised above the surface.

Tilt the coin under direct light to see the raised profile. Check other 2021-P dimes you encounter, as coins from the same production batch share the same die crack at different stages of development.

The fastest way to rule out post-mint damage: if the line is raised with the same surface texture as the coin, it is a die crack. If it is incised or shiny, it is a scratch.

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6. 2021 Dime Strike Through Error (Up to $200)

Strike through errors occur when a foreign object — wire, grease, fabric, tape, or metal shavings — gets trapped between the die and planchet during striking. The object blocks part of the die impression, leaving a flattened, smeared, or imprinted area on the coin.

On 2021-P dimes, a documented variety shows a struck-through wire above Roosevelt’s jawline. A 2021-D variety features a strike through combined with a weak date, where the foreign object partially obscured the mint mark during striking.

Value: Minor strike through errors on circulated 2021 dimes sell for $10 to $30 on eBay. Examples with clearly defined impressions of the foreign object, especially in visible locations on Roosevelt’s portrait, bring $40 to $75.

Dramatic strike throughs where the foreign object remains attached to the coin — a piece of wire or tape still embedded — can reach $100 to $200. Certified examples with attached objects command the strongest premiums from error collectors.

How to Identify: Look for an area that appears abnormally flat, smeared, or impressed with a pattern that does not match the intended design. Wire strike throughs leave thin, slightly depressed lines, while grease-filled errors show areas where design details are mushy or absent.

The affected area should have well-defined edges and the same patina as the rest of the coin. Post-mint scratches or gouges break the coin’s original surface texture, which looks different from a struck-in impression.

Check the depth of the impression — genuine strike throughs show a shallow, uniform depression consistent with minting pressure. Random dents from post-mint damage are usually deeper on one side with irregular edges.

The fastest test: if the affected area shows undisturbed original luster within the impression, it happened at the mint.

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7. 2021 Dime Die Chip/Cud Error (Up to $200)

Die chips and cuds form when small pieces of the steel die break away from repeated striking, and the missing chunks no longer block metal flow. Raised blobs or irregular shapes appear on the finished coin wherever the die is damaged.

Common spots on 2021-P dimes include Roosevelt’s eye, nose, and mouth on the obverse, plus the area around the torch on the reverse. Cuds specifically refer to breaks at the die’s rim, creating a large raised blob at the coin’s edge — these are more dramatic and generally more valuable than interior chips.

Value: Small die chips on 2021 dimes add $3 to $10 in circulated condition. Larger, more prominent chips bring $15 to $40 depending on size and location on the coin’s surface.

Major cud errors with large chunks of raised metal at the rim can sell for $50 to $150. Uncirculated examples with dramatic die chips have reached $200 among error coin specialists, particularly when the cud disrupts a visible part of the design.

How to Identify: Examine Roosevelt’s portrait under magnification, paying close attention to his hair, face, and the surrounding field. Die chips appear as raised bumps that do not match the intended design.

On the reverse, inspect the torch, olive branch, and oak branch. These defects are raised above the surface with the same finish and color as the rest of the coin — post-mint damage like corrosion has a different texture.

For cuds, check the rim for large raised masses that extend inward from the edge. A cud is a smooth, featureless blob occupying space where the broken die section no longer imparted design detail.

The fastest confirmation: if the raised area has the same luster as the coin and you can find the same defect on other 2021 dimes from the same mint, it is a die chip or cud.

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8. 2021 Dime Missing Clad Layer Error (Up to $200)

Roosevelt dimes since 1965 use a copper core sandwiched between cupronickel outer layers. When one layer fails to bond during planchet preparation, the die presses the design directly into exposed copper, creating a coin that appears normal silver on one side and bright copper on the other.

This error occurs before striking, when a partially clad strip enters production and gets punched into blanks with one side’s cladding absent. Unlike circulation wear that gradually thins cladding, a missing clad layer shows clean, sharp design details struck directly into the copper core.

Value: Circulated 2021 dimes with a missing clad layer generally sell for around $20. Mint state specimens with complete missing layers reach $40 to $80 depending on eye appeal and which side is affected.

Dramatic examples where the missing layer creates strong color contrast have sold for $100 to $200 in higher grades. A standard 2021 dime weighs 2.268 grams while one missing a clad layer weighs approximately 1.8 grams — a digital scale settles the question.

How to Identify: Look for one side of the coin that appears bright copper while the other retains normal silver coloring. The copper side should show the full design with sharp struck details, not worn-through cladding from pocket travel.

Examine the edge carefully — normal dimes show a thin copper stripe sandwiched between two silver layers. Missing clad layer dimes show copper extending over the entire face on the affected side, with the edge band appearing asymmetrical.

Weigh the coin on a digital scale. A dime missing one clad layer comes in around 1.8 to 2.2 grams versus the standard 2.268 grams.

Do not confuse this with environmental damage that strips plating after minting — genuine errors show sharp design details in the exposed copper, while post-mint stripping leaves pitted, rough surfaces. Weight is the fastest confirmation.

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9. 2021 Dime Clipped Planchet Error (Up to $200)

Clipped planchet errors occur when the blanking press does not feed the metal strip properly, punching out a disc that overlaps a previously punched hole or the strip’s edge. The resulting blank is missing a section of metal, ranging from small 5% clips to dramatic 25%-plus clips.

Three main types exist: curved clips from overlapping punched holes, straight clips from the strip’s edge, and ragged clips from defective strip areas. The rim opposite the clip often shows a distinctive weakness called the Blakesley Effect.

Value: Small clips removing 5% to 10% of the planchet add $5 to $20 in circulated condition. Moderate clips of 10% to 25% sell for $25 to $75, and mint state examples with dramatic clips reach higher prices.

Large clips of 25% or greater can fetch up to $200. Multiple clips on a single coin are worth even more, though they are uncommon on 2021 dimes.

How to Identify: Check the coin’s edge for any missing sections. Curved clips appear as smooth, arc-shaped cutouts, and the opposite rim often shows weakness from the Blakesley Effect — a flat, weak spot directly across from the clip.

Straight clips have flat, linear edges where the normal curve should be. Ragged clips show irregular, uneven edges from damaged areas of the metal strip.

Verify that the missing area has smooth edges from the punching process — post-mint damage leaves rough, jagged edges. Weigh the coin as well, since a clipped dime will be lighter than 2.268 grams proportional to how much metal is missing.

The fastest confirmation: check for the Blakesley Effect opposite the clip. If the rim there is weak or flattened, the clip happened at the mint.

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10. 2021 Dime Broadstruck Error (Up to $250)

Broadstruck errors occur when the retaining collar fails to deploy during striking, allowing the planchet metal to spread outward freely under pressure. Without the collar, the coin expands beyond its standard 17.91mm diameter, and the edge reeding either disappears entirely or becomes faint and stretched.

The design appears on both sides but looks slightly expanded, with all elements spreading across the larger surface. The coin is also noticeably thinner than normal since the same amount of metal now covers a greater area.

Value: Circulated broadstruck 2021 dimes typically sell for $20 to $50 depending on the degree of expansion. Examples with 10% to 20% diameter increase reach $60 to $100.

Dramatic broadstrikes in mint state showing 25% or greater expansion have sold for $125 to $250. Broadstrikes combined with other errors, such as off-center elements, command additional premiums from collectors chasing unusual combinations.

How to Identify: Measure the coin’s diameter with calipers or compare it side-by-side with a normal dime. Broadstrikes typically measure 19mm to 21mm or more, and the size difference is visible to the naked eye.

Check the edge — normal dimes have 118 reeds, while broadstruck examples show smooth edges or very faint, stretched-out reeding. The edge will also be thinner than normal when viewed on its side.

The design should appear complete but slightly stretched radially from center. If large portions of the design are missing, you may be looking at an off-center strike instead.

The fastest way to confirm a broadstrike: smooth edges plus a measurably larger diameter, together, rule out almost everything else.

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11. 2021 Dime Doubled Die Reverse (DDR) Error (Up to $300)

Doubled die reverse errors occur during die production when the hub impresses the design onto the working die more than once with slight misalignment. Every coin struck by that die shows a shadow or echo effect on the reverse, with letters and design elements appearing twice in slightly offset positions.

On 2021 dimes, the reverse doubling shows most clearly in “UNITED STATES OF AMERICA,” “ONE DIME,” and “E PLURIBUS UNUM.” The torch and branch designs may also display doubled outlines.

Value: Minor DDR errors on circulated 2021 dimes sell for $15 to $35 depending on doubling prominence. Clear, easily visible doubling pushes values to $40 to $80 in circulated grades.

Significant DDR varieties in mint state have reached $100 to $250 at auction, and the strongest examples with dramatic doubling visible under low magnification approach $300. Professional authentication from PCGS or NGC adds considerable resale value.

How to Identify: Examine all lettering on the reverse using a 10x loupe or stronger. Look for letters that appear to have a shadow, extra thickness, or slight duplication of outlines.

Pay particular attention to the tops and bottoms of letters in “UNITED STATES OF AMERICA” and “ONE DIME.” Use angled lighting to reveal shadow effects not visible under direct illumination.

True doubled die errors show consistent doubling across multiple design elements, not just one random letter. Machine doubling — a different and far less valuable phenomenon — creates a flat, shelf-like appearance rather than a sharp, defined secondary image.

If the doubling looks flat and mushy, it is machine doubling and adds zero value. If it looks sharp and clearly offset, submit for professional grading.

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12. 2021 Dime Off-Center Strike Error (Up to $400)

Off-center strikes happen when the planchet is not positioned correctly between the dies, leaving part of the design missing while exposing blank metal. The degree of misalignment determines both the visual drama and the price.

A 5% off-center strike barely affects the design, while a 50% strike creates a coin that is half blank. The most valuable examples keep the full date readable while showing substantial blank area, which confirms the error occurred during minting rather than from post-production damage.

Value: Minor off-center strikes of 5% or less sell for $10 to $20 per coin. Strikes that are 10% to 25% off-center in circulated condition typically bring $25 to $75.

Dramatic 40% to 60% off-center strikes in uncirculated condition can fetch $150 to $400. The sweet spot for value is significant enough to be visually dramatic while still showing the complete date “2021” for authentication.

How to Identify: Look for design elements cut off at one edge while blank planchet area shows on the opposite side. The coin may appear oval or egg-shaped rather than perfectly round.

Check if the date “2021” remains visible — collectors strongly prefer off-center errors where the date can still be read. The blank area should show natural metal color with no design elements at all.

Estimate the percentage off-center by measuring the missing portion against the coin’s full diameter. Coins struck more than 5% off-center are considered collectible, with value increasing proportionally.

The fastest way to distinguish from a broadstrike: off-center strikes show blank planchet area on one side only, while broadstrikes expand evenly in all directions.

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13. 2021 Dime Doubled Die Obverse (DDO) Error (Up to $500)

The doubled die obverse is the reverse counterpart’s more valuable cousin, affecting Roosevelt’s portrait, the date, “LIBERTY,” and “IN GOD WE TRUST.” DDO errors rank higher in collector demand because the obverse is the side people examine first, and strong doubling on the portrait or date creates particularly dramatic specimens.

Coin World reported a 2021-P dime with a significant DDO selling for $450 at auction. Coins exhibiting both obverse and reverse doubling simultaneously are exceptionally rare in modern coinage and represent the highest tier of doubled die collecting.

Value: Circulated 2021 dimes with minor obverse doubling sell for $20 to $50, with clearer examples reaching $60 to $100. Mint state DDO specimens with prominent doubling have sold for $150 to $300.

The reported $450 sale of a 2021-P significant DDO sets the current benchmark. Coins with both DDO and DDR can exceed $400 to $500, representing premium combinations that serious collectors actively pursue.

How to Identify: Start by examining the date “2021” with magnification — look for shadows, extra thickness, or slightly offset secondary images in the numbers. The zero and the two often show doubling most clearly due to their curved shapes.

Inspect “LIBERTY” letter by letter, paying attention to serifs and curves. “IN GOD WE TRUST” may also show doubling, particularly in letters with vertical strokes like “T” and “I.”

Study Roosevelt’s profile for doubling in the hair, nose, or jaw — this is rarer but extremely valuable. True DDO errors produce sharp, clearly defined secondary images, while machine doubling creates flat, shelf-like smearing.

If the doubling looks crisp and offset, pursue professional authentication. A quick comparison against known DDO variety photos online is the fastest first check.

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14. 2021 Dime Brockage Error (Up to $1,000)

Brockage errors occur when a previously struck coin fails to eject and remains stuck to one die. The next planchet gets struck with the proper die on one side and the stuck coin on the other, producing a mirror-image impression where everything appears backwards and sunken.

Letters read in reverse, Roosevelt’s portrait becomes a depression rather than a relief, and all raised design elements appear as sunken impressions. These errors are not commonly reported on 2021 dimes specifically, but remain possible with modern production equipment.

Value: Minor brockages on circulated 2021 dimes could sell for $100 to $300 depending on the clarity of the mirror image. Strong, complete brockages in mint state reach $400 to $800.

Exceptional examples with sharp, fully detailed incuse impressions can exceed $1,000 when professionally authenticated. A 1988-P Roosevelt dime broadstruck obverse brockage was graded MS-66, proving that high-grade brockages on modern dimes exist in the certified market.

How to Identify: Examine both sides of the coin carefully. One side shows the normal raised design, while the other displays a mirror image where everything is reversed and sunken.

Hold the incuse side up to a mirror — the text should read correctly in the reflection. Use a 10x loupe to verify that the incuse details are sharp and well-defined, since the depth and clarity of the mirror impression directly affect value.

All incuse elements should be consistent in depth and style. If some areas appear sunken while others are raised, you may be looking at a die clash or post-mint alteration instead.

The fastest confirmation: flip the coin and check if one entire side is incuse with reversed text. That combination is unique to brockage errors and cannot be replicated by any other minting defect.

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15. 2021 Dime Wrong Planchet Error (Up to $5,000)

Wrong planchet errors occur when a blank intended for one denomination gets fed into a press equipped with dies for another. A dime die striking a cent planchet produces a smaller, copper-colored coin bearing Roosevelt’s portrait with the design looking slightly cramped.

Since the loading tube and die collar are sized for dimes, only planchets of equal or smaller size can physically enter the press. Dimes struck on cent planchets are possible, but dimes on quarter planchets are not — the blank simply would not fit.

Value: Dimes struck on cent planchets typically sell for $500 to $1,500 depending on condition and visual appeal. Uncirculated examples with strong, complete design details can reach $2,000 to $5,000.

For context, a 1942 Mercury dime struck on an Ecuador 5 Centavos planchet graded MS-62 FB realized $11,400 at Heritage Auctions in July 2023. Modern wrong planchet errors command less than vintage examples, but authenticated 2021 specimens remain firmly in four-figure territory.

How to Identify: Weigh the coin — this is the definitive test. A normal dime weighs 2.268 grams while a cent planchet weighs 2.5 grams, so any significant deviation from the expected weight flags a wrong planchet immediately.

Compare the coin’s size to a standard dime. Dimes struck on cent planchets measure 19mm versus the standard 17.91mm, and the design appears slightly cramped on the larger blank.

Check color and edge — a dime on a cent planchet shows copper coloring and a smooth edge without reeding. Professional authentication through PCGS or NGC is essential, since these errors are too valuable and too easily confused with plated or altered coins to sell raw.

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Conclusion

The 2021 Roosevelt dime error market spans from $5 die clashes to wrong planchet strikes pushing into four-figure territory. Most errors in circulated condition fall in the $10 to $75 range and are accessible at any budget.

The real money sits at the top: DDO combinations above $500, brockages approaching $1,000, and wrong planchets in uncirculated condition reaching $5,000. Check your pocket change, but keep your expectations calibrated.