Preserving Your 1958-D Lincoln Cent: A Conservationist’s Guide

Introduction

I’ve seen too many valuable pieces ruined by improper cleaning or storage. Here is how to keep this safe for the next generation.

Historical Significance

The 1958-D Lincoln cent represents a fascinating period in American coinage history. While this particular specimen shows common die deterioration doubling rather than a rare error, it still embodies the craftsmanship of mid-century U.S. Mint production. The Denver Mint produced over 800 million cents in 1958, making this date relatively common in circulated condition.

Identifying Key Markers

Based on the images provided, this appears to be a standard 1958-D Lincoln cent with machine doubling. The doubling effect visible on the lettering and date is characteristic of die deterioration rather than a valuable doubled die variety. This type of doubling typically shows as flat, shelf-like secondary images extending away from the primary design elements.

Metal Composition and Physical Characteristics

This coin consists of 95% copper and 5% tin and zinc, weighing approximately 3.11 grams with a diameter of 19mm. The excellent condition mentioned suggests minimal wear, though the die deterioration affects the overall eye appeal.

Preservation and Storage

Understanding Toning and Oxidation

Copper coins like this Lincoln cent are particularly susceptible to toning and oxidation. The natural patina that develops over time is actually a protective layer, and attempting to remove it can significantly reduce the coin’s value. The reddish-brown hues that appear on copper coins are a result of chemical reactions with environmental factors.

PVC Damage Prevention

One of the most common threats to coin preservation is PVC (polyvinyl chloride) damage. Many older plastic holders contain PVC, which can leach chemicals onto coins, causing irreversible green slime or corrosion. Always use PVC-free holders for long-term storage.

Proper Holders and Storage Methods

For a coin of this nature, consider these storage options:

• Archival-quality flips made from polyester or polyethylene
• Airtight capsules for individual coins
• Temperature and humidity-controlled environments
• Acid-free paper envelopes for short-term storage

To Clean or Not to Clean

The golden rule of coin collecting: never clean valuable coins. Cleaning can remove the natural patina, create micro-abrasions, and significantly diminish value. Even gentle cleaning solutions can alter the coin’s surface chemistry. If absolutely necessary for preservation, consult a professional conservator.

Environmental Considerations

Store coins in a stable environment with relative humidity between 40-50% and temperature around 65-70°F. Avoid basements and attics where conditions fluctuate dramatically. Direct sunlight can cause toning and fading, so keep coins in dark storage when not being viewed.

Handling Best Practices

Always handle coins by their edges to avoid transferring oils from your skin. Cotton gloves can provide additional protection, though clean, dry hands are often sufficient for circulated coins. Hold coins over a soft surface to prevent damage if dropped.

Long-term Preservation Strategy

For coins you wish to preserve for future generations:

1. Document the coin’s current condition with high-quality photographs
2. Store in appropriate archival materials
3. Maintain consistent environmental conditions
4. Periodically check for signs of deterioration
5. Keep coins in their holders when not being examined

Conclusion

While this 1958-D Lincoln cent with die deterioration doubling may only hold nominal value, proper preservation techniques ensure it remains in excellent condition for years to come. Whether kept as a curiosity, teaching tool, or potential heirloom, protecting this coin from environmental damage and improper handling will maintain its historical integrity. Remember, the true value of many coins lies not in their rarity or monetary worth, but in their ability to connect us with the past and tell the story of our nation’s minting history.

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