Rare 2021 Penny Errors (List & Pictures)
A 2021-D retained-cud cent sold for $186 in September 2025, while other same-year sales included a $114 clip and an $84 grease strike-through. Estimated values across these 2021 penny errors run from $2–$500.
Use the shape of the unusual feature to guide your inspection: extra design, raised metal, an impression, or an altered outline. Normal cents weigh 2.50 grams, measure 19.05 mm, and have a smooth edge over a copper-plated zinc body.
| Visible clue | Error group | Estimated value |
|---|---|---|
| Repeated letter or ear outline | Doubled die | $5–$150 |
| Fragment of opposite design | Die clash | $10–$200 |
| Raised line, bar, or rim patch | Die crack or retained cud | $2–$400 |
| Weak detail or impressed line | Struck-through error | $5–$250 |
| Missing piece of edge | Clipped planchet | $20–$250 |
| Wider outline, complete designs | Broadstrike | $30–$350 |
| Plain metal beside partial designs | Off-center strike | $15–$500 |
1. 2021 Penny A Letter Corner or Ear Appears Twice: Doubled Die Error
Look closely at the date, lettering, and Lincoln’s ear for small repeated contours. A doubled die carries overlapping design detail in the stamping tool itself, so it can repeat the same feature on multiple coins.
Other reports concern shield stripes or E PLURIBUS UNUM on the reverse. These are separate patterns and should not be combined into one supposed variety.
How to Identify
Record the mintmark area with the date before enlarging a suspected detail. Philadelphia cents normally have no mint letter, while Denver cents show D.
Follow the extra contour and compare the exact position on the correct face and mint’s variety. A low flat shelf from movement during striking, or a reflection along a letter, can look doubled without showing a doubled die.
What It’s Worth
Identifiable 2021 doubled dies have an estimated value of $5–$150. Minor patterns fit about $5–$30, with stronger examples on attractive unworn coins estimated around $30–$150.
No sale of a named 2021 variety supports a more specific price here. If both faces show a recognized feature, value the whole coin once rather than adding separate estimates together.
2. 2021 Penny An Unfamiliar Design Fragment: Die Clash Error
A shield-related outline beside the portrait can be evidence of contact between the dies. When no blank separates them, the tools can mark each other and later transfer those marks to coins.
How to Identify
Compare an unfamiliar line with the design on the opposite face. The cataloged Philadelphia 2021 clash supplies photographs for checking shape and position.
Do not assemble distant scratches into a design that is not actually continuous. Polishing lines and wrinkles in the copper coating can also create unexpected marks, while impressions pressed on with another coin can leave different damage.
What It’s Worth
A recognizable 2021 die clash has an estimated value of $10–$200. Faint but identifiable traces fit about $10–$50, with stronger examples estimated around $50–$200.
The catalog entry establishes a comparison for the feature without supplying a sale amount here. A clear opposite-design fragment is more useful than unexplained lines, especially when wear does not obscure it.
3. 2021 Penny A Bar, Ridge, or Bounded Rim Area: Die Cracks and Retained Cuds Error
A raised bar between B and E in LIBERTY produces the familiar BIE appearance. Lines extending from Lincoln’s head toward the rim, or across the portrait, can also record cracks in the die.
Metal enters openings in a damaged die and forms raised features. A larger rim-connected piece that cracks but stays in the tool can leave a retained cud, sometimes with design still visible inside its boundary.
How to Identify
First decide whether the mark is a narrow line, a small bar, or a broad bounded area. Check the B-to-E gap for BIE and trace the boundary of a larger break to see whether it joins the rim.
Reported Philadelphia locations include below the date and above UNI on the reverse, while the sold Denver retained cud is a separate example. An internal bump or plating blister should not be called a cud simply because it is raised.
What It’s Worth
The estimated value range is $2–$400 for these 2021 die defects. Small chips and cracks usually fit $2–$50, with larger clear rim breaks estimated around $50–$400.
A 2021-D retained cud graded PCGS MS64 Red sold for $186 in September 2025 in the Heritage auction archive. That unworn, copper-red example provides a reference for the larger error, not an automatic price for a tiny BIE bar.
4. 2021 Penny Letters Fade or a Line Sinks In: Struck-Through Error
Material caught between a die and the blank can interrupt the design as it forms. Grease may weaken letters, while a firmer object can leave a more sharply outlined impression.
Reports describe weak upper reverse lettering on Philadelphia cents and a line-shaped impression on a Denver example. Those descriptions do not establish one coin with both effects or prove that material remained embedded.
How to Identify
Examine the transition from clear detail to the affected area. Compare nearby high points for ordinary wear, and check whether a later scrape cut through completed design or pushed metal to the sides.
A narrow impression does not identify wire or cloth by itself. Photograph both faces with the year and mintmark connected to the affected surface.
What It’s Worth
A genuine 2021 struck-through cent has an estimated value of $5–$250. Smaller blocked areas fit roughly $5–$50, while stronger impressions may fit $50–$250.
A 2021-D grease strike-through graded PCGS MS64 Red sold for $84 in September 2025. It is a same-year result, but it should not be identified as the reported Denver line-shaped impression without evidence linking the two.
5. 2021 Penny A Piece of the Blank Is Missing: Clipped Planchet Error
A clipped planchet begins as an incomplete metal blank. Overlapping a previously punched hole can create a curved clip, while punching near the edge of the strip can leave a straight gap.
How to Identify
Inspect the rim where it meets both ends of the opening. Original metal should meet a pre-existing gap naturally; fresh saw marks, filing, or squeezed edges suggest later cutting.
Weakness at the opposite rim can help support a clip, though it is not equally obvious on every genuine example. Low weight is also useful only with the surface evidence, since a later cut removes metal too.
The year reports include Philadelphia and Denver clips. A separately sold 5% straight clip should not be pictured or described as a curved example.
What It’s Worth
A genuine 2021 clipped-planchet cent has an estimated value of $20–$250. Clip shape, the amount missing, surviving design, and condition all affect the comparison.
The 5% straight-clipped example, graded PCGS MS64 Red, sold for $114 in September 2025. That price describes the complete coin rather than a fixed dollar amount per percentage point of missing metal.
6. 2021 Penny The Coin Spreads Around Complete Designs: Broadstrike Error
Extra width surrounding intact lettering can indicate that the blank spread without normal restraint. The collar, a ring around the blank, usually controls this outward movement during striking.
How to Identify
Check the complete designs on both faces, then compare several measurements across the coin with the normal diameter. A genuine broadstrike can have an uneven outline without losing the intended design off the metal.
Later hammering or squeezing can widen a cent while crushing its letters and high points. Smoothness of the edge is not enough because an ordinary penny already has a smooth edge.
What It’s Worth
A confirmed 2021 broadstrike has an estimated value of $30–$350. Stronger visible expansion on an attractive unworn coin can support more than a slight irregularity.
The supplied year report assigns no specific mint, enlarged diameter, or auction result. Use the actual coin’s measurements and surface condition rather than assuming one standard amount of spreading.
7. 2021 Penny Incomplete Designs Meet a Plain Crescent: Off-Center Strike Error
If the blank sits partly outside the dies, part of it can remain unstruck. Unlike a clip, that plain portion of metal is still attached to the coin.
How to Identify
Find a readable 2021 date, then compare both faces at the same scale. Their incomplete designs should fit the same misplaced blank and meet an original plain area.
If only one face shifts while the other stays centered, consider a misaligned die instead. Grinding can imitate absent design, and an unstruck mintmark area cannot establish the mint.
What It’s Worth
A readable-date 2021 off-center cent has an estimated value of $15–$500. Modest shifts fit approximately $15–$75, with stronger attractive examples estimated around $75–$500.
No particular 2021 auction result or fixed displacement is supplied for this category. Date visibility and condition matter alongside the size of the plain crescent.
Conclusion
Start by deciding whether metal is raised, depressed, missing, or simply unstruck. Those observations keep a small BIE bar, a retained cud, and a clipped blank from being grouped together just because all look unusual.
The $84, $114, and $186 sales offer useful same-year reference points for specific errors and grades. Compare a candidate with the matching mechanism and condition before treating any of those results as its likely value.
