Preserving Your 1972 Lincoln Cent: Toning, Oxidation, and Storage Solutions

Preserving Your 1972 Lincoln Cent: A Collector’s Guide

As a passionate numismatist, I’ve seen far too many valuable coins deteriorate due to improper handling and storage. The 1972 Lincoln cent, especially varieties like the FS-107 we’re discussing, demands specific care to maintain its condition for future generations.

This copper coin is particularly vulnerable to environmental damage. The metal composition makes it susceptible to oxidation, while improper storage can lead to PVC damage that permanently mars the surface. Let me share essential preservation techniques that will protect your coin’s integrity and collectibility.

Understanding Toning and Oxidation

Copper coins develop toning through natural oxidation processes. When exposed to air, moisture, and various environmental contaminants, copper forms compounds that create the characteristic coloration we see on older coins. For the 1972 cent, this process can manifest as:

• Reddish-brown hues from initial oxidation
• Deep brown tones as oxidation progresses
• Verdigris (green patina) in severe cases

While some collectors appreciate natural toning, excessive oxidation can damage the coin’s surface. The key is controlling the environment to slow these processes without artificially altering the coin’s appearance or numismatic value.

Preventing PVC Damage

One of the most destructive threats to coin preservation is PVC (polyvinyl chloride) found in many common plastic holders. When PVC degrades, it releases hydrochloric acid that etches into the coin’s surface, creating irreversible damage characterized by:

• Greenish deposits on the coin surface
• Cloudy or hazy appearance
• Actual pitting of the metal in advanced cases

Always use PVC-free holders specifically designed for coin storage. Look for products labeled “archival quality” or “acid-free” to ensure your coin’s long-term preservation.

Proper Storage Solutions

The forum discussion highlighted several storage considerations for the 1972 cent. Based on the images shared, this coin shows signs of handling wear, including marks on the devices and potential surface issues. Here are the best storage practices:

Short-term Storage

For coins awaiting grading or evaluation, use individual cardboard 2×2 holders with Mylar windows. These provide protection while allowing easy viewing. Avoid touching the coin’s surface directly – handle by the edges only to preserve the strike quality.

Long-term Storage

For preservation over decades, consider these options:

• Airtight containers with silica gel packets to control humidity
• Temperature-controlled environments (65-70°F ideal)
• Acid-free coin tubes for multiple coins of the same type
• Archival-quality albums with individual pockets

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

This question generates significant debate among collectors. From a preservation standpoint, I strongly advise against cleaning coins unless performed by conservation professionals. The 1972 cent in our discussion shows natural wear consistent with its age – attempting to clean it would likely:

• Remove the natural patina that protects the surface
• Create micro-abrasions that reduce the coin’s grade
• Potentially damage any remaining mint luster
• Decrease the coin’s numismatic value significantly

If you absolutely must address surface contaminants, consult a professional conservator who can use specialized techniques that won’t harm the coin’s surface or value.

Environmental Control Factors

The 1972 cent’s copper composition makes it particularly sensitive to environmental conditions. Maintain these parameters for optimal preservation:

Humidity Control

Keep relative humidity between 40-50%. Higher humidity accelerates oxidation, while very low humidity can make coins brittle. Use dehumidifiers in damp climates and avoid storing coins in basements or attics where conditions fluctuate dramatically.

Temperature Stability

Avoid temperature extremes and rapid fluctuations. Store coins away from exterior walls, heating vents, and direct sunlight. Consistent temperatures prevent condensation that can trigger oxidation and affect the coin’s eye appeal.

Air Quality

Store coins away from sources of sulfur compounds, which can cause discoloration. This includes avoiding storage near paper, cardboard (unless archival quality), rubber bands, and certain types of adhesives that might compromise the coin’s preservation.

Documentation and Handling

Proper documentation enhances a coin’s historical value while careful handling prevents physical damage. For the 1972 cent variety under discussion:

• Document the coin’s condition with high-resolution photographs
• Record any identifying characteristics, particularly for varieties like FS-107
• Use cotton gloves when handling to prevent oil transfer from skin
• Support the coin fully when examining to prevent flexing

Professional Conservation Services

For valuable specimens or coins with existing damage, professional conservation services can stabilize and sometimes improve condition. These experts use techniques like:

• Micro-abrasion to remove specific contaminants
• Stabilization of active corrosion
• Application of protective coatings when appropriate
• Documentation of conservation procedures performed

Always choose conservators accredited by recognized organizations like the American Institute for Conservation to ensure proper care of your rare variety.

Conclusion: Preserving History for Future Generations

The 1972 Lincoln cent, whether a common variety or a collectible die variety like FS-107, represents a tangible piece of American history. Proper preservation ensures that future collectors and historians can study and appreciate these coins as we do today.

By controlling environmental factors, using appropriate storage materials, and avoiding harmful cleaning practices, you can maintain your coin’s condition for decades to come. Remember that sometimes the best preservation technique is simply proper storage and minimal handling.

The coin discussed in our forum thread, with its characteristic wear patterns and potential variety attribution, tells a story of its journey through circulation. Our role as collectors and conservationists is to protect that story while preventing further deterioration through informed preservation practices.

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