How to Spot Rare Errors on How did this get graded

The Curious Case of the 1959-D Wheat Cent

Most collectors know that the tiniest details can transform an ordinary cent into a numismatic treasure worth thousands. When a coin surfaces claiming to be something extraordinary, the first question any serious numismatist should ask is: does this make historical sense?

Historical Significance

The 1959-D Lincoln cent represents one of the most famous “ghost” coins in American numismatics. The U.S. Mint officially transitioned from the Wheat reverse to the Lincoln Memorial reverse in 1959, making any 1959-D cent with a Wheat reverse an immediate red flag. This design change was deliberate and well-documented, with millions of 1959 cents struck featuring the new Memorial design.

The Known Authentic Specimen

There is only one verified 1959-D Lincoln cent mule in existence, discovered in 1986 by Leon Baller. This coin features a 1959-D obverse paired with a Wheat reverse, creating a genuine mint error of enormous historical significance. The Treasury Department’s Forensic Services Division examined it in 1987 and 2002, confirming its authenticity based on composition and lack of tool marks.

Identifying Key Markers

When examining a potential 1959-D error, several critical markers must be checked:

Reverse Design Verification

The most obvious indicator is the reverse design. A genuine 1959-D cent must show the Lincoln Memorial, not the Wheat ears. Any 1959-D with a Wheat reverse should immediately raise suspicion unless it matches the known authentic specimen’s pedigree.

Date Examination Under Magnification

Forum members examining the coin in question noticed something crucial when enlarging the date area. What appears to be a “9” may actually show the lower loop of an “8” to the right of displaced metal. This suggests the coin is likely a damaged 1958-D rather than a 1959-D.

Die Cracks and Metal Displacement

Die cracks appear as raised lines on the coin’s surface, while metal displacement from damage shows as areas where the metal has been pushed or altered. The forum discussion notes that the date area shows clear signs of metal displacement rather than die characteristics.

Common Error Types to Recognize

Understanding different error types helps collectors avoid costly mistakes:

Mechanical Damage vs. Mint Errors

Mechanical damage from coin rolling, gumball machines, or other circulation can cause displaced metal that mimics error characteristics. This type of damage is common and significantly reduces a coin’s value.

Double Dies

Double die errors show clear doubling of design elements, typically visible in the date, lettering, or portrait. This occurs when the die receives multiple impressions during creation. The doubling should be consistent and not random.

Mint Mark Variations

Mint mark variations include repunched mint marks (RPM), over mint marks, and different mint mark styles for specific years. These require careful comparison with known authentic examples.

Authentication Process

Professional authentication involves multiple steps:

Visual Examination

Experts examine the coin under magnification, checking for tool marks, casting bubbles, and inconsistencies in the design. They verify that all elements match the correct specifications for the claimed date.

Weight and Composition Testing

Authentic coins must match the correct weight and metal composition for their year and mint. Deviations suggest either alterations or counterfeit pieces.

Certification Verification

Checking certification numbers through official channels is essential. The forum discussion mentions that the certification number checked as valid, but this doesn’t guarantee the coin’s authenticity if the grading service made an error in attribution.

Value Guide

The value of error coins varies dramatically based on authenticity and rarity:

Genuine 1959-D Mule Cent

The authenticated specimen has sold for $48,300 (2003), $31,050 (2010), and $50,000 (2019) at auction. These prices reflect its unique status and documented provenance.

Damaged Common Date Coins

A damaged 1958-D or similar common date coin might be worth only its copper value or a few dollars to a collector interested in error examples. The forum consensus suggests this coin is worth only a few dollars due to its mechanical damage.

Authentication Errors

When grading services make attribution errors, the coin’s value depends on whether the error is corrected. The forum mentions a similar incident where a 1959 Wheat cent was accidentally certified in 1973, highlighting that even professionals can miss obvious inconsistencies.

Expert Analysis

Professional numismatists examining the coin in question have reached a clear consensus: this is not a genuine 1959-D mule cent. The evidence points to a damaged 1958-D or similar date with mechanical damage creating the appearance of a different date.

Common Mistakes in Authentication

The forum discussion reveals how even experienced collectors and grading services can miss obvious errors. One expert notes that PCGS may have certified the coin without realizing that a 1959-dated Lincoln cent should have a Memorial reverse, not a Wheat reverse.

Conclusion

The 1959-D Lincoln cent mule remains one of the most fascinating error coins in American numismatics, but its extreme rarity means that most coins claiming to be this variety are actually misidentified damaged common dates. Careful examination of the reverse design, date characteristics, and overall coin condition is essential for any collector considering a purchase. The case discussed in this forum thread demonstrates how mechanical damage can create convincing illusions of rare errors, emphasizing the importance of professional authentication and historical knowledge in the error coin market.

For collectors, this serves as a valuable lesson: always verify that a coin makes historical sense for its claimed date, and never assume that certification guarantees authenticity. The most expensive mistake a collector can make is paying premium prices for a common coin with damage or alterations that only superficially resemble a genuine rarity.

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