As a coin collector, you may be tempted to clean your coins to make them shine like new. However, this can be a costly mistake. Cleaning coins can lower their value, and in some cases, even render them worthless. In this article, we will explore the reasons why cleaning coins can be detrimental to their value and what you can do instead to preserve their condition.
The Importance of Patina
One of the main reasons why cleaning coins can lower their value is that it removes the patina. Patina is the layer of grime and tarnish that forms on the surface of a coin over time. It may seem counterintuitive, but patina is actually a desirable feature in coins. It provides a record of the coin’s history and can be used to authenticate its age.
When you clean a coin, you risk removing the patina and altering its appearance. This can make it difficult for collectors and dealers to determine the coin’s authenticity and value. In fact, many collectors and dealers view cleaned coins with suspicion, as they may have been altered or tampered with in some way.
The Role of Patina in Coin Grading
Patina plays a crucial role in coin grading, which is the process of evaluating a coin’s condition and assigning a grade. Coin grading is typically done by third-party grading services, such as the Professional Coin Grading Service (PCGS) or the Numismatic Guaranty Corporation (NGC).
When grading a coin, these services take into account the coin’s patina, as well as other factors such as its strike, luster, and surface quality. A coin with a rich, even patina is generally considered more desirable than one with a cleaned or altered surface.
The Impact of Cleaning on Coin Grades
Cleaning a coin can significantly impact its grade. In fact, many grading services will automatically lower the grade of a coin that has been cleaned or altered in some way. This is because cleaning can remove the patina and alter the coin’s appearance, making it difficult to determine its authenticity and value.
For example, a coin that is graded MS-65 (Mint State 65) may be downgraded to MS-60 or lower if it is cleaned. This can result in a significant decrease in the coin’s value, as collectors and dealers are willing to pay more for coins with high grades.
The Dangers of Chemical Cleaning
One of the most common methods of cleaning coins is chemical cleaning. This involves using a chemical solution to remove dirt and grime from the coin’s surface. However, chemical cleaning can be extremely damaging to coins, as it can remove the patina and alter the coin’s appearance.
Chemical cleaning can also damage the coin’s surface, causing scratches, pits, and other imperfections. In some cases, chemical cleaning can even cause the coin to become brittle or discolored, which can significantly impact its value.
The Risks of Using Harsh Chemicals
Using harsh chemicals to clean coins can be particularly risky. Harsh chemicals, such as bleach or acid, can damage the coin’s surface and remove the patina. In some cases, harsh chemicals can even cause the coin to become discolored or develop unsightly stains.
For example, using bleach to clean a coin can cause it to become discolored or develop a white, chalky appearance. This can significantly impact the coin’s value, as collectors and dealers view coins with discoloration or stains as less desirable.
The Importance of Gentle Cleaning Methods
If you must clean your coins, it is essential to use gentle cleaning methods. This can include using a soft-bristled brush to remove dirt and debris, or using a mild soap solution to clean the coin’s surface.
It is also essential to avoid using harsh chemicals or abrasive materials, as these can damage the coin’s surface and remove the patina. Instead, opt for gentle cleaning methods that will not damage the coin or alter its appearance.
The Benefits of Conservation
Instead of cleaning your coins, consider conserving them. Conservation involves preserving the coin’s condition and preventing further deterioration. This can include storing the coin in a cool, dry place, away from direct sunlight and moisture.
Conservation can also involve using specialized materials, such as acid-free paper or inert plastics, to store and display the coin. This can help to prevent damage and deterioration, and ensure that the coin remains in good condition for years to come.
The Role of Conservation in Coin Preservation
Conservation plays a crucial role in coin preservation. By preserving the coin’s condition and preventing further deterioration, you can help to ensure that the coin remains valuable and desirable.
Conservation can also involve restoring the coin to its original condition. This can include removing dirt and debris, or repairing damage to the coin’s surface. However, it is essential to use gentle methods and avoid altering the coin’s appearance in any way.
The Benefits of Working with a Professional Conservator
If you are unsure about how to conserve your coins, consider working with a professional conservator. A professional conservator can provide expert advice and guidance on how to preserve your coins and prevent further deterioration.
A professional conservator can also help to restore your coins to their original condition, using gentle methods and specialized materials. This can help to ensure that your coins remain valuable and desirable, and can be enjoyed for years to come.
Conclusion
Cleaning coins can lower their value, as it can remove the patina and alter their appearance. Instead of cleaning your coins, consider conserving them. Conservation involves preserving the coin’s condition and preventing further deterioration, and can help to ensure that the coin remains valuable and desirable.
By understanding the importance of patina and the dangers of chemical cleaning, you can make informed decisions about how to care for your coins. Remember to always use gentle cleaning methods and avoid harsh chemicals or abrasive materials, and consider working with a professional conservator if you are unsure about how to preserve your coins.
| Method | Risk Level | Potential Damage |
|---|---|---|
| Chemical Cleaning | High | Removes patina, damages surface, causes discoloration |
| Gentle Cleaning | Low | None, if done correctly |
| Conservation | Low | None, if done correctly |
By following these tips and guidelines, you can help to ensure that your coins remain valuable and desirable for years to come.
What are the common methods people use to clean coins?
People often use various methods to clean coins, including using chemicals, abrasive materials, and even household items like toothpaste or baking soda. These methods can be damaging to the coin’s surface and may lower its value. Some collectors may also use ultrasonic cleaners or steam cleaners, which can also cause damage if not used properly.
It’s essential to understand that cleaning coins is not always necessary, and in many cases, it’s better to leave them as is. Coins can develop a natural patina over time, which can be a desirable trait for collectors. Cleaning a coin can remove this patina and potentially damage the surface, reducing its value.
Why can cleaning coins lower their value?
Cleaning coins can lower their value because it can damage the surface, remove the natural patina, and potentially alter the coin’s appearance. Coins are often graded and valued based on their condition, and any damage or alteration can negatively impact their value. Additionally, cleaning a coin can also remove any historical or cultural significance it may have, making it less desirable to collectors.
Collectors and dealers often look for coins that are in their original condition, with minimal handling or alteration. Cleaning a coin can make it appear more modern or altered, which can be a turn-off for collectors. Furthermore, some cleaning methods can leave residues or scratches on the coin’s surface, which can be difficult to remove and may permanently damage the coin.
What are the risks of using chemicals to clean coins?
Using chemicals to clean coins can be particularly risky, as some chemicals can damage the coin’s surface or react with the metal. For example, using bleach or acid can etch the coin’s surface, creating tiny scratches or pits that can be difficult to remove. Other chemicals, such as ammonia or vinegar, can react with the metal and cause discoloration or corrosion.
It’s also important to note that some chemicals can leave residues on the coin’s surface, which can attract dirt and dust, making the coin appear dirty or tarnished. Additionally, using chemicals can also damage any protective coatings or wax that may be on the coin, making it more susceptible to damage or corrosion.
Can I use household items to clean coins?
While it may be tempting to use household items to clean coins, it’s generally not recommended. Household items like toothpaste, baking soda, or soap can be too abrasive or harsh for coins, and can damage the surface or remove the natural patina. Additionally, these items can leave residues or scratches on the coin’s surface, which can be difficult to remove.
It’s also important to note that some household items can react with the metal or cause discoloration. For example, using toothpaste with fluoride can react with the metal and cause discoloration or corrosion. It’s best to avoid using household items to clean coins and instead use gentle, specifically designed cleaning solutions or consult a professional conservator.
How can I safely clean coins?
If you must clean a coin, it’s essential to use gentle, specifically designed cleaning solutions and follow proper techniques. One recommended method is to use a soft-bristled brush and mild soap solution to gently remove any dirt or debris. You can also use a coin cleaning solution specifically designed for the type of coin you have.
It’s also important to handle coins carefully and avoid touching the surface, as oils from your skin can damage the coin. Always wear gloves when handling coins, and make sure your workspace is clean and free from dust and debris. If you’re unsure about how to clean a coin or if it’s safe to do so, it’s best to consult a professional conservator or numismatist.
What are the best ways to store and handle coins to prevent damage?
To prevent damage and maintain the value of your coins, it’s essential to store and handle them properly. Coins should be stored in a cool, dry place, away from direct sunlight and moisture. You can store coins in albums, folders, or individual holders, making sure they are not touching each other or any other objects.
When handling coins, always wear gloves to prevent oils from your skin from damaging the coin. Handle coins by the edges, avoiding touching the surface, and make sure your workspace is clean and free from dust and debris. You can also use a soft-bristled brush to gently remove any dirt or debris from the coin’s surface.
Can I get my coins professionally conserved or restored?
Yes, you can get your coins professionally conserved or restored by a qualified conservator or numismatist. Professional conservators use specialized techniques and equipment to clean, conserve, and restore coins, ensuring that the coin’s value and integrity are maintained.
It’s essential to research and find a reputable conservator or numismatist who has experience working with coins. They can assess the coin’s condition and recommend the best course of action for conservation or restoration. Keep in mind that not all coins can be restored, and some may be too damaged or altered to be conserved.