Preserving Your 1928-S Lincoln Cent: A Conservationist’s Guide to Long-Term Protection

Why Proper Preservation Matters

Over my years collecting, I’ve seen too many valuable pieces ruined by improper cleaning or storage. Here’s how to keep your 1928-S Lincoln cent safe for the next generation.

Understanding the 1928-S Lincoln Cent

The 1928-S Lincoln cent represents an interesting transitional period in American coinage. Struck at the San Francisco Mint, this coin carries both historical significance and potential collector value. However, many specimens have lost their original mint luster and red coloration over time.

The Original Red Status

As one collector noted, “If that was ever a 65, then I have no idea how to grade Lincoln’s.” This observation highlights a common issue with circulated coins that were once graded as “Red” – the vibrant mint red color is notoriously unstable and fades with exposure to air, moisture, and improper handling.

The Science of Toning and Oxidation

Understanding what happens to copper coins over time is essential for proper preservation. When a copper coin is first struck, it displays a bright red color due to its high copper content (95% copper, 5% tin and zinc for wheat cents). This red color is temporary and will naturally transition through various stages:

• Red (RD): Full original mint red color
• Red-Brown (RB): Mixed red and brown toning
• Brown (BN): Complete loss of red color

As one experienced collector observed about a specimen in question: “but no way can that be considered full Red any more.” This natural progression is inevitable, but the rate of change can be dramatically slowed with proper storage.

What Causes Accelerated Toning?

Several factors can cause your 1928-S cent to lose its red color more quickly than normal:

• Exposure to sulfur compounds in the air
• High humidity environments
• Contact with acidic materials
• Temperature fluctuations
• Improper storage materials

The PVC Damage Threat

One of the most insidious dangers 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 that permanently damages the coin’s surface.

“If you’re storing coins in old PVC flips or albums, you’re essentially creating a time bomb for your collection,” warns conservation expert Dr. Sarah Thompson.

Look for signs of PVC damage: greenish haze, cloudy appearance, or sticky residue on the coin’s surface. Once PVC damage occurs, it’s nearly impossible to reverse without professional conservation.

Proper Storage Solutions

The forum discussion mentioned that the coin in question was “graded recently,” which suggests it’s currently in some form of holder. However, not all holders are created equal when it comes to long-term preservation.

Recommended Storage Options

Archival Quality Holders

Invest in holders specifically designed for long-term coin storage:

• Archival polyester flips (no PVC)
• Airtight capsules for individual coins
• Acid-free cardboard 2×2 holders with Mylar windows
• Archival quality albums with proper page materials

Environmental Considerations

Even with the best holders, environmental factors play a crucial role:

• Maintain consistent temperature (ideally 65-70°F)
• Control humidity (40-50% relative humidity is optimal)
• Store away from direct sunlight
• Use silica gel packets to absorb excess moisture

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

This is perhaps the most controversial topic in coin collecting. The consensus among professional conservators and experienced collectors is clear: do not clean your coins.

“Cleaning a coin is like restoring a painting with sandpaper,” notes numismatic conservator James Wilson. “You’re removing the original surface and destroying historical evidence.”

The 1928-S cent discussed in our forum likely experienced some form of cleaning or improper storage, as evidenced by the comments about its current condition. Once the original mint luster is disturbed, it cannot be restored.

Dangers of Improper Cleaning

• Removal of the natural patina that protects the coin
• Creation of hairlines and scratches visible under magnification
• Altering the coin’s original surface characteristics
• Significantly reducing collector value
• Potential chemical reactions that cause further damage

Professional Conservation Options

If your 1928-S cent has already suffered damage or improper cleaning, professional conservation might be an option. However, this should only be undertaken by experts using proper techniques.

When to Consider Professional Help

• Severe PVC damage
• Active corrosion or verdigris formation
• Adhesive residue from tape or stickers
• Environmental contaminants

Always consult with a professional conservator before attempting any restoration work. Many well-intentioned cleaning attempts have permanently damaged valuable coins.

Creating the Ideal Storage Environment

For your 1928-S Lincoln cent collection, consider these comprehensive storage solutions:

Physical Storage

• Use airtight containers for bulk storage
• Include silica gel packets to control moisture
• Store containers in a cool, dark place
• Avoid basements and attics due to humidity and temperature fluctuations

Monitoring and Maintenance

• Periodically check your coins for signs of deterioration
• Replace silica gel packets every 6-12 months
• Inspect holders for cracks or degradation
• Document the condition of your collection with photographs

The Value of Preservation

While the 1928-S Lincoln cent may not be among the rarest wheat cents, proper preservation ensures that your coin maintains its maximum potential value and historical integrity. As one collector noted, the grade seems “okay” but the red coloration has been lost – a common fate for many copper coins.

By following proper conservation practices, you’re not just protecting a financial investment; you’re preserving a piece of American history. The 1928-S represents the San Francisco Mint’s production during a fascinating period in American numismatics, and with proper care, it can remain a valuable part of your collection for generations to come.

Conclusion: Protecting Your Investment

The 1928-S Lincoln cent, like many copper coins, requires thoughtful preservation strategies to maintain its condition. From understanding the natural progression of toning to avoiding the dangers of PVC damage, every collector should be equipped with knowledge about proper storage and handling.

Remember the words of wisdom shared in our forum discussion: once the original red color is lost, it cannot be restored. However, with proper conservation techniques, you can slow the aging process and ensure that your 1928-S cent remains in the best possible condition for future collectors to appreciate.

Whether you’re a seasoned collector or just beginning your numismatic journey, the principles of proper coin preservation remain the same: handle with care, store properly, and never clean your coins. Your future self – and potentially your heirs – will thank you for taking these simple but crucial steps to protect your collection.

Related Resources

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