1990 Lincoln Cent Errors: Value Guide & Rare Varieties

The 1990 Lincoln cent looks like ordinary pocket change — and for the most part, it is. But hidden inside certain 1990 Proof Sets is one of the most dramatic mint errors of the 20th century: the "No S" Proof, a coin that should carry the San Francisco "S" mint mark but doesn't. Fewer than 200 are believed to exist, yet billions of normal 1990 cents also have no mint mark. Knowing the difference is everything. This 1990 penny value guide gives you the exact tests, the real values, and a clear map of what's worth keeping — and what's worth spending.

1990 Lincoln Cent Specifications & Mintage

Before hunting errors, understand the production basics. These specs also help you identify wrong-planchet errors — a coin that weighs or measures differently than expected is a red flag.

The zinc planchet introduced in 1982 is prone to plating blisters and zinc corrosion — manufacturing defects that look alarming but are worth nothing. Understanding this saves you from chasing worthless coins. For standard pricing reference, see the complete 1990 penny value guide.

1990 Lincoln Cent Errors: Quick Checks

Work through these checks in order. A 10× loupe (magnifying glass) is required for checks 2 and 3. For check 1, all you need is a light source and a printed page.

1990 Lincoln Cent Error Values: Complete Chart

1990 Lincoln Cent Valuable Errors: Full Identification Guides

1990 No S Proof Lincoln Cent (FS-101)

Left: 1990 No S Proof with sharp 90-degree wire rim. Right: Common Philadelphia business strike with rounded beveled rim.

Origin & Background

By 1990, the U.S. Mint had modernized die production: mint marks were engraved directly into the master die rather than hand-punched, which should have prevented "No S" proof errors. But the 1990 No S Proof happened anyway through a different failure. A die intended for Philadelphia — which carries no mint mark by design — was accidentally mixed into the San Francisco proof workflow. It was then polished to a mirror finish, its devices sandblasted to a frosted texture, chromium-plated for durability, and shipped to San Francisco where it was used to strike proof coins. Mint officials discovered the error and destroyed approximately 145 struck examples, but fewer than 200 coins had already been packaged in standard 1990 Proof Sets and Prestige Proof Sets and distributed to collectors. Attribution number: FS-101 in the Cherrypickers' Guide to Rare Die Varieties.

How to Identify

• Rim Test (most reliable): Hold the coin on its edge and examine where the rim meets the coin's side. A No S Proof has a sharp right-angle junction — practically 90 degrees — because the high-pressure proof strike forced metal fully against the collar. A business strike has a rounded or beveled rim. If the rim is rounded, it is not a proof.
• Reflection Test: Hold the coin 6 inches from a printed page under a single light source. Tilt it so the flat background (field) reflects the page. If you can read the text in the reflection, it has proof-quality mirror fields. Business strikes produce blurred reflections interrupted by rotating spokes of cartwheel luster — no readable text.
• Cameo Contrast: Genuine No S Proofs show "Deep Cameo" (DCAM) contrast: frosted matte-white devices standing in sharp relief against jet-black mirror fields. This two-tone effect is hard to fake convincingly.
• Strike Quality: Proof coins are struck multiple times at extreme pressure. Every detail — including the finest hair lines on Lincoln's portrait — is razor-sharp.

Proof mirror field (left) reflecting readable text. Business strike (right) showing cartwheel luster spokes that blur the reflection.

False Positives to Avoid

The single most common false positive is the standard Philadelphia business strike — 6.85 billion of them exist with no mint mark. Cartwheel luster and a rounded rim disqualify any coin instantly. The second false positive is an altered coin: a genuine 1990-S Proof from which a dishonest person has removed the "S" by tooling. On an altered coin, the area where the S should be will show scratches, a recessed depression, or a different surface texture under magnification. On a genuine No S Proof, that area is completely smooth and consistent with the surrounding field — because the die never had an S to begin with. Cleaned or polished business strikes can look shiny but will still betray themselves with beveled rims and interrupted reflections.

Market Values & Population

• PCGS has certified approximately 192 examples; NGC approximately 78. The true number of unique coins is believed to be under 200, with the population inflated by resubmissions ("crack-outs").
• $3,800–$7,200+ — current range for PR69 DCAM examples (2023–2025).

Auction Record

$20,700 for PR69 DCAM (Bowers & Merena, August 2007). Recent results: $7,201 (October 2020), $4,800 (July 2023), $3,840 (September 2025). The market has corrected from pre-recession highs but maintains a strong four-figure floor for top-grade examples. See full auction price history at PCGS CoinFacts FS-101.

1990-D Doubled Die Obverse (DDO-001)

1990-D DDO-001: thickened vertical bars in L, I, and B of LIBERTY, with V-shaped notches at the corners of B, E, and R.

Origin & Background

A Doubled Die Obverse (DDO) is a true die variety, not a striking mistake. It occurs during the die-making process when the working hub and working die are slightly misaligned between hubbing operations. The 1990-D DDO-001 is classified as Class V (Pivoted Hub) doubling, where the pivot point is near the rim. This causes rotational doubling that grows stronger as you move away from the pivot — meaning the center of LIBERTY shows the most dramatic effect. Attribution: VarietyVista DDO-001.

How to Identify

• LIBERTY (primary check): Under 10× magnification, the vertical bars of L, I, and B appear noticeably thicker than on a normal coin. Look for small V-shaped notches at the top-left corners of the letters B, E, and R — these notches form where two slightly offset impressions of the serif overlap.
• Date: The loops of the 9s in 1990 may appear slightly thicker or distorted, though this is subtler than the LIBERTY doubling.
• IN GOD WE TRUST: The word GOD in particular may show doubling depending on the die position.
• The key test: The secondary image must be rounded and at the same height as the primary — the letter looks fatter. If it looks like a flat step, it is machine doubling.

Left: Machine Doubling — flat shelf steps down, primary letter looks thinner. Right: True Doubled Die — secondary image is rounded, letters appear thicker.

False Positives to Avoid

Machine Doubling (MD) is the primary false positive for this variety and it is extremely common on 1990-D cents. Remember: MD is flat, shelf-like, steps down from the primary letter, and makes letters look thinner. True DDO makes letters look thicker. Also distinguish from plating splits or zinc corrosion that can distort lettering near the date area.

Market Values

• $5–$15 — circulated examples found in pocket change.
• $50–$150 — certified MS65 Red examples (sales are sporadic; niche specialist demand).

Auction Record

No single landmark auction record is established for this variety in attributed form. The coin is primarily a cherrypicker's target, recoverable from circulation or dealer stock at modest cost.

1990 Doubled Die Reverse (DDR-001)

1990 DDR-001: secondary thinner columns visible in the bays between the primary Memorial columns.

Origin & Background

The 1990-P Doubled Die Reverse (DDR-001) is a Philadelphia mint die variety with an extremely strong spread affecting the Lincoln Memorial columns. Because the doubling is located in the central design area rather than the peripheral lettering where most people look, it is frequently overlooked in dealer stock — making it a classic cherrypicker's find. Attribution: VarietyVista DDR-001.

How to Identify

• The bays (spaces between columns): Under 10× magnification, look into the open areas between the Lincoln Memorial's primary columns. On DDR-001, you will see secondary thinner columns inside these bays — the doubled impressions of the primary columns.
• Column arches: Extra column arch details may also be visible at the top of the column structures.
• Confirmation: The spread is described as extremely strong, so the secondary columns should be clearly distinct — not faint or ghostly.

False Positives to Avoid

Die deterioration (a worn die at end of its life) produces mushy, ghostly images in the column details. True DDR-001 shows sharp, distinct secondary column impressions, not vague shadows. Machine doubling on the columns produces flat, shelf-like secondary images — not the three-dimensional rounded doubling of a true doubled die.

Market Values

This variety is primarily of interest to Lincoln cent specialists. It can often be found in dealer stock at or near face value because most dealers and collectors are not examining the column bays under magnification. No standardized retail value range is established in current market data; it trades as a cherrypicker's find.

1990 Lincoln Cent on Wrong Planchet

Wrong planchet error (silver-colored, smaller) compared to a normal 1990 copper-colored cent of standard size.

Origin & Background

A wrong-planchet error occurs when a coin blank (planchet) intended for a different denomination accidentally enters the striking chamber. For a 1990 cent, the most notable example would be a cent die striking a dime planchet — made of copper-nickel clad rather than copper-plated zinc.

How to Identify

• Color: A cent struck on a dime planchet will be silver in color (copper-nickel clad), not the familiar copper tone.
• Size and weight: A dime planchet weighs 2.27 g versus a standard zinc cent at 2.50 g. It is also noticeably smaller in diameter. Weigh the coin first on a digital scale.
• Missing design: Because the dime planchet is smaller than the cent die, portions of the cent design will be missing at the periphery — the rim lettering or outer details will be cut off.

False Positives to Avoid

Many "silver pennies" are simply normal zinc cents that have been electroplated with mercury or zinc in a high school chemistry experiment. These weigh the same as a normal cent (2.50 g) and are not errors. Always weigh the coin before drawing conclusions. Environmental tarnish or chemical reactions can also discolor zinc cents in silver-grey tones — check weight and size first.

Market Values

• $400–$1,000+ — verified examples command strong premiums. Professional authentication (PCGS or NGC) is essential before buying or selling.

Auction Record

No standardized landmark auction is established in current data for a 1990 specifically. Value estimates are based on comparable wrong-planchet cent errors from the zinc era.

1990 Lincoln Cent Broadstrike

Broadstrike (left) showing expanded diameter and missing rim compared to a standard 19mm 1990 cent (right).

Origin & Background

A broadstrike occurs when the collar — the retaining ring that surrounds the planchet during striking — fails to deploy or is mispositioned. Without the collar holding it in, the metal flows outward freely during impact. The result is a coin larger in diameter than standard, with the design spread outward and the rim absent or smeared.

How to Identify

• Diameter: The coin measures wider than the standard 19.0 mm — the expansion can be dramatic.
• Shape: Perfectly round and centered (unlike an off-center strike). The design is complete but spread thin at the edges.
• Rim: The rim is missing, smeared outward, or reduced to a thin sliver. There is no raised border because no collar was present to form it.

False Positives to Avoid

Coins damaged in a clothes dryer show irregular scratches and deformation inconsistent with the uniform, circular expansion of a true broadstrike. Coins run over by vehicles show uneven flattening. A genuine broadstrike has smooth, natural expansion with no random damage marks.

Market Values

• $15–$50 — depending on the severity of expansion and overall condition of the coin.

1990 Lincoln Cent Off-Center Strike

Off-center 1990 cent showing a blank crescent of unstruck planchet and a clearly visible date — critical for attribution and value.

Origin & Background

An off-center strike occurs when the planchet feeder mechanism malfunctions and delivers the blank only partially between the dies. The struck portion shows the Lincoln cent design; the rest is a smooth, blank crescent of raw planchet. Note: zinc-era off-center cents (1982–present) are generally less valuable than their copper predecessors due to higher production volumes and the unappealing appearance of the exposed zinc core on the unstruck portion.

How to Identify

• Blank crescent: The unstruck area has a smooth, natural planchet surface — not cut, filed, or machined. A post-mint cut shows tool marks; a genuine off-center does not.
• Date visibility: The date must be fully readable to attribute the coin to 1990. A dateless off-center zinc cent is a generic, low-value item.
• Percentage: Values increase significantly above 40% off-center when the date remains visible. Minor examples (10–20%) are common and modestly priced.

False Positives to Avoid

Coins cut or damaged by machinery after leaving the mint show irregular, rough edges unlike the smooth natural edge of a genuine off-center. Always check the edge of the unstruck crescent — it should look like raw, unworked planchet metal.

Market Values

• $5–$10 — minor off-center (10–20%)
• $20–$50 — major off-center (40–60%) with full date visible
• Dateless zinc off-center: minimal premium over face value

1990 Lincoln Cent Error Traps: What Looks Valuable but Isn't

The 1990 Lincoln cent generates more false alarms than almost any other modern coin. The copper-plated zinc planchet creates convincing-looking defects, and machine doubling is so common it fools even experienced collectors. Know these traps cold before spending time on a coin.

⚠️ Plating Blisters — Bubbles That Subtract Value

What You See:

Circular bumps or raised linear lines running across the design — sometimes bisecting Lincoln's entire portrait. Called "zits" by experienced collectors. Common on all 1990 cents.

Why It Happens:

The zinc core contains microscopic contaminants or trapped gas. During striking, heat and pressure cause poor-adhesion spots to push the copper plating outward, forming bubbles. Linear blisters form along the rolling grain of the zinc strip.

Plating blister (left): smooth, hollow organic bubble — worth zero. Die crack (right): jagged raised metal line filling a crack in the die.

How to Tell It's NOT Valuable:

• Blisters are smooth, hollow, and organic-shaped — like a vein under skin. Die cracks are jagged and filled with solid metal.
• Linear blisters run straight across the design, riding over Lincoln's relief like a blanket. Die cracks meander and stop at relief changes.
• Blisters subtract from a coin's grade — graders will note them as defects. They do not add value.

Value: Face value or less — they reduce the coin's grade.

Note on counterfeits: Altered 1990-S Proof cents (with the S mint mark removed by tooling) are the primary counterfeit concern for this date. Always authenticate suspected No S Proofs professionally — look for consistent surface texture where the S would be.

1990 Lincoln Cent Grading: Why Color Designation Controls Value

For 1990 Lincoln cents, the color designation assigned by PCGS or NGC is the single biggest driver of value for non-error coins — and dramatically affects error coin prices too. Graders look at the percentage of original mint copper-orange color remaining.

Designation	Criteria	Value Impact
Red (RD)	95%+ of original mint orange color remaining	Maximum value — the investor/collector class
Red-Brown (RB)	5–95% original color; partial toning to brown	Significantly reduced from RD — fraction of RD price at same grade
Brown (BN)	Less than 5% original color; fully oxidized	Near face value unless a major error (No S, off-center, etc.)

The zinc planchet makes maintaining Red color extremely difficult. Carbon spots — tiny black specks that develop as the copper plating ages — are the enemy of high grades. A single spot can drop a coin from MS69 to MS67 or lower. Zinc cents also scratch easily from contact with other coins in mint bags. An MS69 Red 1990-P cent has sold for $4,300–$7,200; the same coin in Red-Brown would bring a fraction of that. If you find a 1990 cent with blazing orange luster and zero spots, protect it immediately in an airtight holder.

Three 1990 cents showing Red (RD), Red-Brown (RB), and Brown (BN) color designations — each dramatically affects market value.

1990 Lincoln Cent Authentication: When to Get Your Coin Certified

1990 Lincoln Cent Errors: Frequently Asked Questions

1990 Lincoln Cent Research Methodology & Sources

Values and diagnostics in this guide are drawn exclusively from the following authoritative numismatic sources. Auction records reflect actual realized prices from certified auction results.

• PCGS CoinFacts — 1990 No S Proof FS-101 (coin #408239)
• PCGS Auction Prices — 1990 No S Proof (coin #93506)
• PCGS Auction Prices — 1990-P Business Strike MS (coin #3083)
• PCGS Auction Prices — 1990-D Business Strike MS (coin #3086)
• VarietyVista — 1990 DDO-001 Diagnostic Page
• VarietyVista — 1990 DDR-001 Diagnostic Page
• lincolncents.net — 1990 No S Proof Lincoln Cent
• Numismatic News — Collector Strikes it Rich with No S
• Numismatic News — Three More 1990 No S Proof Lincoln Cents Found
• Error-Ref.com — Plating Blisters Reference