Preserving Your 1963-D Cent: Expert Conservation Tips for Collectors

Understanding Your 1963-D Cent’s Condition

As a conservationist, I’ve seen countless coins like this 1963-D Lincoln cent that collectors bring in, hoping to preserve their finds for future generations. The raised symbol on both sides of this coin presents an interesting preservation challenge that requires careful consideration.

The Importance of Proper Storage

Before we discuss the specific preservation needs of this coin, let’s address the fundamental aspects of coin storage that apply to all numismatic items. The environment in which a coin is stored can dramatically affect its long-term condition and value.

Temperature and Humidity Control

Coins should be stored in a stable environment with consistent temperature and humidity levels. Extreme fluctuations can cause metal expansion and contraction, potentially damaging the coin’s surface. For copper-alloy coins like this 1963-D cent, which contains 95% copper, maintaining a relative humidity below 50% is crucial to prevent accelerated toning and corrosion.

Light Exposure Considerations

Prolonged exposure to direct sunlight or UV light can accelerate the toning process and potentially damage the coin’s surface. Store your coins in a dark environment or use UV-filtering materials when displaying them.

Understanding Toning and Oxidation

The 1963-D cent, like all copper coins, will naturally develop a patina over time. This toning process is a natural chemical reaction between the copper and environmental elements. While some collectors prize attractive toning, others prefer to maintain the original mint luster.

Natural vs. Artificial Toning

Natural toning develops gradually over decades and often creates beautiful, multi-colored patterns. Artificial toning, created through chemical treatments, can be detected by experienced conservators and significantly reduces a coin’s value. The key is to allow natural toning to occur while preventing harmful oxidation.

Preventing Harmful Oxidation

While toning is natural, oxidation that leads to pitting or corrosion is destructive. This occurs when coins are exposed to:

• High humidity environments
• Pollutants in the air
• Acidic storage materials
• Direct contact with human skin oils

The PVC Damage Threat

One of the most significant threats to coin preservation is PVC (polyvinyl chloride) damage. Many older coin holders and flips contained PVC, which can leach out over time and create a greenish, slimy residue on coins. This damage is irreversible and can significantly reduce a coin’s value.

Identifying PVC Damage

Look for these signs of PVC contamination:

• Greenish residue on the coin’s surface
• Cloudy appearance on the coin
• Sticky or slimy texture
• Discoloration that cannot be wiped away

Proper Holders and Storage Solutions

Based on the condition of your 1963-D cent, I recommend the following storage solutions:

Archival-Quality Holders

Invest in holders made from inert materials such as:

• Acid-free cardboard with Mylar windows
• Polyester film (Mylar D or equivalent)
• Hard plastic holders made from inert materials

Avoiding Common Storage Mistakes

Never store coins in:

• Regular paper envelopes (acidic)
• Vinegar-based solutions (damages metal)
• Household cleaning products
• Direct contact with other coins

To Clean or Not to Clean: The Conservationist’s Perspective

This is perhaps the most critical question for coin collectors. Based on the discussion about your 1963-D cent, it’s clear that the raised symbol is likely post-mint damage (PMD). However, the decision to clean should be approached with extreme caution.

Why Cleaning is Generally Discouraged

Cleaning a coin, even with the gentlest methods, will almost always:

• Remove the natural patina
• Create microscopic scratches
• Reduce the coin’s numismatic value
• Potentially damage the coin permanently

“I’ve been told by one coin expert that the mint employees will sometimes mark a die for inspection, and produce coins with the mark that are not intended for circulation. Is this true?”

In short: no. This does not happen. If the mint were to deliberately damage or deface a die because it failed an inspection, it would simply be destroyed; they wouldn’t carve ampersands on it and then strike coins with it.

When Professional Conservation Might Be Necessary

There are rare instances where professional conservation is warranted:

• Coins with harmful PVC residue
• Coins with active corrosion
• Coins intended for high-value auctions
• Coins with environmental contaminants

Always consult with a professional conservationist before attempting any cleaning or conservation work.

Documenting and Monitoring Your Collection

For valuable pieces like this 1963-D cent, maintaining detailed documentation is essential:

Photographic Records

Take high-quality photographs of your coin under consistent lighting conditions. Document:

• Both sides of the coin
• Any unusual features or damage
• Close-ups of areas of interest
• The coin’s current holder and storage method

Environmental Monitoring

Consider using a hygrometer in your storage area to monitor humidity levels. Keep a log of any environmental changes that might affect your collection.

Special Considerations for Altered Coins

Given that this 1963-D cent appears to have post-mint alterations (the raised symbol), there are specific preservation considerations:

Understanding the Alteration

The raised symbol on both sides suggests this is likely a counterstamp – a form of post-mint alteration where a design is stamped onto the coin after it leaves the mint. This doesn’t necessarily reduce the coin’s value for collectors interested in counterstamped coins, but it does require special handling.

Preserving the Alteration

The counterstamp itself should be preserved as part of the coin’s history. Avoid any cleaning methods that might blur or damage the raised design. The key is to stabilize the coin’s current condition rather than attempting to restore it to an imagined “original” state.

Long-Term Preservation Strategy

Developing a comprehensive preservation strategy for your 1963-D cent and other numismatic items should include:

Regular Inspection Schedule

Establish a routine for examining your coins:

• Monthly: Quick visual inspection for any changes
• Quarterly: Detailed examination under magnification
• Annually: Comprehensive condition assessment

Insurance and Documentation

For valuable pieces, ensure you have:

• Current appraisals
• Photographic documentation
• Insurance coverage for numismatic items
• Detailed provenance records

Conclusion: Preserving History for Future Generations

The 1963-D cent with its mysterious raised symbol represents more than just a collectible – it’s a piece of history that deserves proper preservation. Whether the symbol is a counterstamp, a mint employee mark, or simply post-mint damage, the coin tells a story that future collectors and historians will want to study.

By following proper conservation practices – controlling environmental factors, using appropriate storage materials, avoiding harmful cleaning methods, and maintaining detailed documentation – you can ensure that this coin remains in stable condition for generations to come.

Remember, the goal of conservation is not to make a coin look “new” but to preserve its current state and prevent further deterioration. Sometimes, the signs of age and use are what make a coin historically significant and valuable to collectors.

As you continue your numismatic journey, always prioritize preservation over restoration. The coins we collect today will become the historical artifacts of tomorrow, and it’s our responsibility as collectors and conservationists to ensure they survive in the best possible condition for future generations to study and appreciate.