Rare 2010 Sacagawea Dollar Errors Worth Money (Full List With Pictures)

Heritage Auctions sold a 2010-D Sacagawea dollar with a die cap error for $1,200 in 2021 — that is 1,200 times face value for a golden dollar coin. The complete 2010 Sacagawea dollar error list includes eleven documented error types, with confirmed prices ranging from $50 for an improperly annealed planchet to four figures for die caps, lamination splits, and edge lettering errors.

Here is every error sorted by value, with auction records and identification tips for each one.

1. 2010 Sacagawea Dollar Improper Annealing Error (Up to $200)

Annealing is the heat treatment that prepares planchets for striking. The manganese brass alloy used for Sacagawea dollars is particularly sensitive to this process — when furnace temperature or atmosphere goes wrong, the planchet’s surface chemistry changes and the coin comes out with abnormal coloring.

On golden dollars, improper annealing can produce dark brown, blackish, streaky, or mottled surfaces instead of the normal bright golden tone. The manganese in the alloy oxidizes faster than other metals when the atmosphere is off, making this denomination more prone to annealing errors than clad coins.

Value: No 2010-specific improperly annealed Sacagawea dollar has surfaced at a major auction with a high confirmed record. A comparable 2001-P Sacagawea dollar graded PCGS MS67 with an improper annealing error sold for $79 on eBay.

General market pricing: raw examples trade for $25 to $75. Certified specimens with dramatic full-surface discoloration sell for $75 to $200.

How to Identify: Look for unusual coloring that deviates from the normal bright golden brass — dark brown, black, mottled, or streaky tones across the entire coin or large sections. The discoloration should appear uniform and metallic.

Tilt the coin under a single light source. Genuine improper annealing shows normal mint luster and flow lines on top of the dark surface — the luster spins as you rotate the coin.

Environmental toning on Sacagawea dollars is extremely common and worth nothing. The key difference: annealing errors retain full mint luster, while environmental damage creates a dull, matte finish.

The fastest test: spinning mint luster visible over the dark surface.

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2. 2010 Sacagawea Dollar Broad Strike Error (Up to $300)

A broad strike happens when the restraining collar fails to engage during striking. Without that collar containing the planchet, the metal spreads outward under die pressure and produces an oversized coin with a completely smooth, unlettered edge.

On Sacagawea dollars, this error is particularly obvious because the normal coin has incused edge lettering — “E PLURIBUS UNUM,” the year, mint mark, and 13 stars. A broadstruck golden dollar lacks all of that edge text and is visibly wider and thinner than normal.

Value: No 2010-specific broadstrike Sacagawea dollar has a confirmed major auction record. General pricing for modern dollar broadstrikes: minor expansion with barely smooth edges brings $50 to $100.

Dramatic broadstrikes that are obviously oversized with complete design details sell for $150 to $300. The value scales with how dramatically oversized the coin is and how well-centered the design remains.

How to Identify: Measure your coin with calipers. A normal Sacagawea dollar is exactly 26.5 mm in diameter — any reading above that warrants closer inspection.

Check the edge. A broadstrike has a completely smooth, flat edge with no incused lettering at all, whereas a normal golden dollar has “E PLURIBUS UNUM,” the date, mint mark, and stars incused into the edge.

Weight should be normal at 8.1 grams since the planchet itself is correct — only the collar failed. Both faces should show complete, well-struck design details.

The fastest test: wider than 26.5 mm plus completely smooth edge with no lettering.

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3. 2010 Sacagawea Dollar Off-Center Strike Error (Up to $400)

An off-center strike occurs when the planchet feeds into the press misaligned with the dies. The dies stamp the design toward one edge, leaving a blank crescent on the opposite side where no design transferred.

Each off-center strike is unique in direction and degree, and on dollar coins even a small percentage is dramatic because the coin is large enough to make the displacement obvious in hand. Date visibility is critical — without the date, the coin cannot be attributed to 2010.

Value: No 2010-specific off-center Sacagawea dollar has a confirmed major auction record. General pricing for modern dollar off-center strikes: 5% to 15% displacement sells for $30 to $75.

Dramatic 30% to 50% strikes with visible dates reach $200 to $400. Post-2002 dollar errors are scarcer because the Mint installed laser sensors to catch mistakes before release.

How to Identify: Look for design elements cut off along one edge with a blank, unstruck crescent on the opposite side. The blank area should show raw manganese brass planchet surface with the characteristic golden color.

The edge lettering may be partially present, absent, or misaligned relative to the design. Measure the displacement as a percentage of the 26.5 mm diameter.

Confirm that the struck portion shows sharp detail consistent with a single strike. Do not confuse with a broadstrike, which shows the full design on an oversized coin with no blank crescent.

The fastest test: blank crescent plus partial design, with the date visible.

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4. 2010 Sacagawea Dollar Clipped Planchet Error (Up to $500)

Clipped planchets form when the blanking press punches discs from a metal strip and the strip fails to advance properly. The next punch overlaps the hole from the previous blank, creating a planchet with a curved bite taken out of its edge.

On Sacagawea dollars, the clip removes a section of the edge where lettering would normally appear. The incomplete planchet goes through the entire production process — including edge lettering — carrying the missing chunk to the finished coin.

Value: No 2010-specific clipped planchet Sacagawea dollar has surfaced at a major auction. General pricing for modern dollar clips: small clips under 10% sell for $30 to $75, and medium clips of 10% to 20% bring $75 to $200.

Major clips over 25% with preserved dates can command $300 to $500. Blank dollar planchets (unstruck) from this era sell for $40 to $50 on eBay, which sets the floor.

How to Identify: Look for a smooth, curved indentation along the edge where metal is missing. The clip should interrupt the normal incused edge lettering — you will see the text end abruptly at the clip.

Check for the Blakesley effect — a weak or absent rim directly opposite the clip, 180 degrees away. This diagnostic signature forms because the metal could not flow properly during upsetting where the blank was incomplete.

Weigh the coin — a clipped Sacagawea dollar will come in under the standard 8.1 grams. The fastest test: Blakesley effect on the opposite rim plus interrupted edge lettering at the clip.

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5. 2010 Sacagawea Dollar Die Crack Error (Up to $555)

Die cracks form when the steel dies fracture from repeated high-pressure strikes. Each die stamps thousands of coins before wearing out, and toward the end of its service life, hairline fractures split the die face.

When the cracked die strikes a planchet, metal flows into the fissure and solidifies as a raised line on the finished coin. On 2010 Sacagawea dollars, die cracks can cross Sacagawea’s portrait, the “Great Law of Peace” reverse design, or run from the rim through lettering.

Value: Heritage Auctions sold a 2010-D Sacagawea dollar graded MS63 with a die crack error for $555 in 2019. Minor die cracks add $5 to $25 depending on length and location.

Cracks running through major design elements — Sacagawea’s face or the Haudenosaunee belt — bring $50 to $200. Large cracks approaching cud territory push past $300.

How to Identify: Scan both sides under magnification and bright, angled light. Die cracks appear as raised lines — run your fingernail across a suspected crack and you should feel a ridge.

Common locations include through “LIBERTY,” along Sacagawea’s profile, or extending from the design to the rim. Scratches are incised and rough; die cracks are raised and smooth.

Check the edge lettering — die cracks on the coin faces do not affect the incused edge text, which should appear normal. The fastest test: if the line is raised and smooth, it is a die crack; if incised and rough, it is damage.

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6. 2010 Sacagawea Dollar Struck Through Error (Up to $650)

Struck-through errors happen when foreign material lands between the die and planchet just before striking. Wire fragments, cloth fibers, grease, or metal shavings block the die from fully transferring its design, leaving a weak or blank zone on the finished coin.

When the foreign object stays embedded in the coin, it is a retained struck-through. On Sacagawea dollars, the large planchet surface area gives debris more room to land, and the golden color makes blank patches especially visible against the brass surface.

Value: No 2010-specific struck-through Sacagawea dollar has a confirmed major auction record. Comparable-era golden dollar struck-through errors range from $50 to $650 depending on the type and drama of the obstruction.

Minor grease fills add $25 to $75. Dramatic struck-throughs with clear shapes or large blank areas sell for $100 to $350, and retained struck-throughs with visible debris push past $500.

How to Identify: Look for areas where design details are weak, blurred, or absent while surrounding areas show full-strike detail. The affected zone should have defined boundaries — not a gradual fade like wear.

Grease fills produce smooth, flat patches on the golden surface. Wire strikes leave thin raised lines, and fabric struck-throughs may show thread textures.

Check whether foreign material remains on the coin — retained objects dramatically increase value. The fastest test: sharply defined blank or weak zone on one side only, with the opposite side struck normally.

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7. 2010 Sacagawea Dollar Doubled Die Error (Up to $730)

Doubled die errors originate during die manufacturing, not coin striking. When the Mint presses a hub into a die blank, a slight shift between impressions creates a permanent doubled image in the die itself.

Every coin struck from that flawed die shows identical doubling. On 2010 Sacagawea dollars, doubling can appear on “LIBERTY,” “IN GOD WE TRUST,” the date, or the “Great Law of Peace” reverse design — particularly the five arrows in the Haudenosaunee figure’s grasp.

Value: Heritage Auctions sold a 2010-D Sacagawea dollar graded MS62 with a doubled die error for $730 in 2013. Typical DDO examples from this year range from $25 to $730 depending on doubling strength.

Weak doubling visible only under heavy magnification sits near the bottom. Clearly visible doubling on multiple design elements commands the premium end.

How to Identify: Examine “LIBERTY” and “IN GOD WE TRUST” under 10x magnification first. Look for a distinct secondary image with rounded, raised contours offset from the primary design.

Machine doubling — flat, shelf-like steps on one side of letters — is worthless and common on modern dollars. True doubled dies show rounded, three-dimensional doubling.

Check the date, Sacagawea’s portrait details, and reverse inscriptions for consistent doubling. The fastest test: rounded, raised doubling across multiple elements versus flat shelf-like steps that are worth nothing.

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8. 2010 Sacagawea Dollar Missing Edge Lettering Error (Up to $1,020)

Missing edge lettering errors occur when a struck coin bypasses the Schuler edge-lettering machine entirely. After the coin is struck by the obverse and reverse dies, it is supposed to pass through a separate machine that incuses the edge text — “E PLURIBUS UNUM,” the year, the mint mark, and 13 stars.

When a coin skips that step, the edge is completely smooth and plain. The 2009 and 2010 Sacagawea dollars were among the first Native American dollars to receive edge lettering, and the process was still being refined, which contributed to a higher error rate in those early years.

Value: Heritage Auctions sold a 2010 Sacagawea dollar graded MS69 with missing edge lettering for $1,020 in September 2017. That MS69 grade drove the premium — lower-grade examples sell for considerably less.

General pricing: circulated or low-grade missing edge lettering examples trade for $30 to $100. MS65 and above brings $200 to $500, and MS68+ pushes past $800.

How to Identify: Run your finger around the entire edge. A normal 2010 Sacagawea dollar has incused (recessed) text you can feel — “E PLURIBUS UNUM,” the date “2010,” a mint mark, and 13 stars.

If the edge is completely smooth with no text whatsoever, you have a missing edge lettering error. Do not confuse with weak edge lettering, where the text is present but faint or partially struck — that is a different variety.

Weigh the coin to confirm it is a genuine Sacagawea dollar (8.1 grams) and not a foreign coin or medal. The fastest test: completely smooth edge with no incused text at all.

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9. 2010 Sacagawea Dollar Lamination Error (Up to $1,050)

Lamination errors occur when impurities in the manganese brass alloy weaken the internal bonding of the metal. The copper core and brass outer layers can separate, or the brass itself can split along internal fault lines, creating peeling, flaking, or cracking on the coin’s surface.

The manganese brass alloy used for Sacagawea dollars is particularly susceptible to lamination because the four-metal mix (copper, zinc, manganese, nickel) creates more potential failure points than simpler alloys. Dramatic examples show large flaps of metal peeling away from the coin’s body on both sides.

Value: Heritage Auctions sold a 2010-P Sacagawea dollar graded MS62 with a peeling lamination error for $1,050. The coin showed peeling on both the obverse and reverse, making it doubly dramatic.

Minor lamination flaws add $10 to $50. Medium-sized peeling areas sell for $50 to $200, and dramatic splits affecting both sides push past $500.

How to Identify: Look for areas where the metal surface appears to be lifting, bubbling, or peeling away from the coin’s body. The separated area should follow natural fracture lines in the alloy.

Genuine lamination splits have smooth, metallic edges where the alloy fractured along its internal plane. Post-mint damage shows rough, torn edges with signs of external force.

The golden color of the brass makes lamination particularly visible — exposed copper core appears reddish beneath the golden surface. The fastest test: clean metallic separation along an internal plane with no tool marks.

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10. 2010 Sacagawea Dollar Position B Edge Lettering Error (Up to $1,100)

Edge lettering on Sacagawea dollars can be applied in two orientations: Position A (normal) has the edge text reading upright when the obverse faces up, while Position B (inverted) has the same text reading upside down relative to the obverse. The orientation difference occurs because the Schuler edge-lettering machine accepts coins from either direction.

Position B results are less common and are considered a collectible variety. Some years have more Position B coins than others, and 2010-D examples with this inversion are particularly sought after.

Value: GreatCollections sold a 2010-D Sacagawea dollar graded MS65 with Position B edge lettering for $1,100 in 2020. Weak edge lettering variants in Position B have also brought $1,000 at auction.

Lower-grade Position B examples sell for $25 to $100. MS64 and above brings $200 to $600, and MS65+ can push past $800 depending on the specific mint mark and edge clarity.

How to Identify: Hold the coin with the obverse (Sacagawea’s portrait) facing you, right side up. Look at the edge lettering without flipping the coin.

On a Position A coin, the text reads upright from left to right. On a Position B coin, the text appears upside down — you would need to flip the coin 180 degrees for the edge text to read normally.

Check the full circumference of the edge to confirm the orientation is consistent. Both orientations are genuine Mint products, but Position B is less common and carries a premium.

The fastest test: edge lettering reads upside down when the obverse faces up.

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11. 2010 Sacagawea Dollar Die Cap Error (Up to $1,200)

A die cap error begins when a freshly struck coin sticks to the upper hammer die instead of ejecting. That stuck coin becomes a new die face — its reverse now stamps every subsequent planchet, producing mirror-image brockage coins.

As the stuck coin is hammered deeper with each strike, it wraps around the die’s edges and takes on the shape of a small cap or thimble. On a Sacagawea dollar, the 26.5 mm diameter makes the resulting die cap visually dramatic — a large, bowl-shaped piece of golden metal with a stretched, distorted design.

Value: Heritage Auctions sold a 2010-D Sacagawea dollar graded MS65 with a die cap error for $1,200 in 2021. Die cap errors on modern dollars are scarce because quality control catches most press malfunctions quickly.

Early-stage caps with mild distortion bring $200 to $500. Fully formed caps with dramatic metal stretching and the characteristic thimble shape push past $1,000.

How to Identify: The coin will be obviously deformed — curved or bowl-shaped rather than flat. One side shows a normal strike, while the other shows a raised, mirror-image impression from the stuck coin that acted as the new die face.

The edges will be stretched and curved upward, giving the characteristic cap shape. The golden brass color makes the distortion especially visible against the normal flat profile.

The design on the brockage side appears reversed — text reads backward. Weight may differ slightly from 8.1 grams due to metal displacement.

The fastest test: a bowl-shaped golden coin with a mirror-image backward design on one side.

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Conclusion

The 2010 Sacagawea dollar error market runs from $50 for a minor improper annealing to $1,200 for a die cap. Six of the eleven errors on this list have confirmed sales above $550, and four have cleared $1,000.

The edge lettering errors — missing, weak, and Position B — are unique to this series and the easiest to check with no tools at all. Just run your finger around the edge.