Preserving Your 1964D Lincoln Cent: A Conservationist’s Guide to Long-Term Protection

The Conservationist’s Perspective

Throughout my years in numismatics, I’ve witnessed countless treasures irreparably harmed by improper cleaning or storage. The following guidelines will help ensure your 1964D Lincoln cent survives intact for future generations to appreciate.

Understanding Your 1964D Lincoln Cent

The 1964D Lincoln cent stands as a testament to a pivotal era in American coinage. Struck at the Denver Mint—evident from the “D” mint mark—this coin emerged during a period of significant economic transformation in the United States. Victor David Brenner’s enduring Lincoln portrait graces the obverse, while the Lincoln Memorial reverse design continued until 2008, making this piece a bridge between numismatic traditions.

Metal Composition and Vulnerability

Composed of 95% copper and 5% zinc, weighing precisely 3.11 grams with a 19mm diameter, the 1964D cent’s high copper content renders it particularly susceptible to environmental degradation. Copper naturally interacts with oxygen, moisture, and atmospheric chemicals, resulting in oxidation and toning. This metallurgical understanding forms the foundation of proper preservation techniques.

The Toning Spectrum: Friend or Foe?

Toning on copper coins manifests across a spectrum from subtle golden hues to deep, iridescent colors. For the 1964D Lincoln cent, collectors typically encounter red (RD), red-brown (RB), or brown (BN) designations in numismatic grading. The “super red” appearance referenced in the forum post actually represents the holy grail for collectors, indicating minimal circulation and exceptional preservation of the original mint luster.

When Toning Becomes Damage

While natural toning can enhance a coin’s aesthetic appeal and numismatic value, artificial toning or environmental damage proves detrimental. Be vigilant for:

• Verdigris (green corrosion) – indicating severe copper deterioration
• Black spots or pitting – suggesting chemical reactions
• Uneven coloration – revealing improper storage conditions

The PVC Threat: Silent but Destructive

Polyvinyl chloride (PVC) ranks among the most insidious threats to coin preservation. Many vintage coin holders, flips, and albums incorporated PVC as a plasticizer. When exposed to heat and moisture, PVC decomposes and releases hydrochloric acid, which bonds to the coin’s surface and causes irreversible damage characterized by a slimy green residue that permanently mars the coin’s surfaces.

Identifying PVC Damage

Examine your 1964D cent for these warning indicators:

• Green, sticky residue on the coin’s surface
• Cloudy or hazy appearance on otherwise clear fields
• Uneven coloration, particularly around the edges

“Once PVC damage occurs, professional conservation represents the only viable option. Prevention through proper storage proves infinitely preferable to attempting restoration.”

To Clean or Not to Clean: The Eternal Question

This topic generates more debate in collecting circles than perhaps any other. For your 1964D Lincoln cent, the answer almost invariably remains: do not clean it. Professional conservators and grading services consistently devalue cleaned coins, as cleaning removes the natural patina and microscopic surface details that contribute to a coin’s grade and authenticity.

The Risks of Improper Cleaning

Common cleaning methods and their consequences:

• Abrasive polishing – creates hairlines and removes metal
• Chemical dips – strip natural toning and luster
• Soap and water – can leave mineral deposits and accelerate tarnishing

Proper Storage Solutions for Your 1964D Cent

The forum mentions Whitman folders and tri-fold albums. While acceptable for short-term storage or display purposes, serious collectors should consider more robust options for long-term preservation.

Recommended Storage Options

Airtight holders: Individual capsules manufactured from inert materials like Mylar or polystyrene provide excellent protection against environmental factors. Seek holders specifically designed for cents (19mm diameter) to ensure proper fit.

Temperature and humidity control: Store your coins in a cool, dry environment with stable temperature (ideally 60-70°F) and relative humidity below 50%. Avoid basements, attics, and areas prone to temperature fluctuations that can accelerate toning.

Archival-quality albums: For displaying multiple coins, select albums with acid-free pages and no PVC content. Brands like Intercept Shield offer albums with anti-tarnish technology that actively neutralize harmful gases.

Handling Your 1964D Cent with Care

Even with perfect storage, improper handling can damage your coin. Always hold coins by the edges, never touching the flat surfaces with your fingers. The natural oils and acids on skin can leave permanent fingerprints and accelerate toning, potentially reducing both eye appeal and market value.

Best Practices for Coin Handling

• Wash and thoroughly dry hands before handling
• Use cotton gloves for added protection
• Work on a soft, clean surface to prevent drops
• Never speak over open coin holders (moisture from breath can cause spots)

Monitoring and Maintenance

Regular inspection of your stored coins can prevent minor issues from becoming major problems. Every 6-12 months, carefully examine your 1964D cent for any signs of deterioration or environmental damage.

Inspection Checklist

• Check for new toning or color changes
• Inspect holders for cracks or degradation
• Verify storage environment remains stable
• Look for any signs of pest activity (silverfish love paper and cardboard)

The Value of Proper Preservation

While the forum correctly notes that most 1964D cents carry only face value, well-preserved specimens in high grades can command significant premiums. A 1964D cent in MS-67 RD condition might sell for $50-$100 or more. The difference between a coin worth one cent and one worth hundreds often comes down to preservation quality and eye appeal.

Conclusion: Securing Your Legacy

The 1964D Lincoln cent may seem common, but proper preservation ensures it remains in excellent condition for future generations. Whether you’re a casual collector or serious investor, the principles of conservation remain constant: prevent damage through proper storage, avoid cleaning, and handle with care. By following these guidelines, your 1964D cent will maintain its historical integrity and potential value for decades to come.

Remember, every coin tells a story. Your role as a conservationist is to ensure that story remains legible and beautiful for those who come after us. The small steps you take today in preservation will be appreciated by tomorrow’s collectors and historians, who will thank you for maintaining these tangible pieces of our shared heritage.

Related Resources

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