Alexei Volkov
Coin collectors have various options for storing their coin collections. Collectors seek to protect their coins from oxidation and other chemical damage, mechanical damage, loss, and theft. Some common options for coin storage include plastic flips, cardboard flips, coin folders, coin tubes, coin albums, and coin slabs. Collectors then place their collections in specialty-designed coin storage boxes. To prevent theft, collectors may use safes or bank safety deposit boxes. While Ziploc bags are convenient for coin storage, they are not ideal for expensive coins as they may cause abrasions.
Storing coins in plastic bags
| Characteristics | Values |
|---|---|
| Protection from oxidation and other chemical damage | Low, unless the bag contains PVC |
| Protection from mechanical damage | Low, unless the bag is thick |
| Ease of viewing and organisation | High |
| Protection from loss or theft | Low |
| Cost | Low |
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What You'll Learn
Zip-lock bags are safe for coin storage
Zip-lock bags are generally safe for coin storage, but there are some important considerations to keep in mind. Firstly, it is essential to ensure that the zip-lock bags are PVC-free. Polyvinyl chloride (PVC) is a suspected carcinogen, and its use in products has decreased significantly. However, if a bag contains PVC, it can cause coins to ""sweat," leading to discolouration and potential damage over time, especially to copper coins. Therefore, unless the bag is labelled as PVC-free, it is best to assume it contains PVC and avoid using it for coin storage.
Zip-lock bags made of polyethylene (low density) are a good option for coin storage as they do not contain PVC. These bags offer protection against fluids and smoke, preventing discolouration and tarnishing. However, they may not provide adequate protection against impact damage, especially if the coins are stored in a larger container. To enhance protection, coins can first be placed in airtight holders or mylar 2x2s before being put into the zip-lock bags.
Another consideration is the storage environment. It is recommended to store coins in a cool, dry place to maintain their condition. Additionally, checking on the coins periodically will help identify any potential issues. For long-term storage, some collectors suggest using cardboard 2x2s or coin albums as they provide better impact protection and ensure that coins do not bang against each other, reducing the risk of scratches and abrasion.
While zip-lock bags can be used for coin storage, they may not be ideal for expensive or valuable coins. The potential for abrasion and the lack of impact protection make other storage options more suitable for high-value coins. However, for circulated or inexpensive coins, zip-lock bags can be a convenient and safe option, especially when combined with proper storage conditions and periodic checks.
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Avoid PVC plastic bags
While plastic bags are a commonly used option for coin storage, it is important to exercise caution and avoid using PVC plastic bags. Polyvinyl chloride (PVC) bags can be detrimental to the condition of your coins over time.
PVC bags can cause coins to "sweat," leading to discolouration and damage, especially to copper coins. This process may take a long time, but it can ultimately ruin the appearance and value of your collection. Therefore, it is advisable to steer clear of PVC bags when storing coins.
When choosing plastic bags for coin storage, opt for PVC-free poly bags or Ziploc bags. These alternatives do not possess the same harmful properties as PVC and are generally considered safe for coins. Ziploc bags, in particular, are widely used and recommended within the coin collecting community.
If you are unsure about the type of plastic bag you have, it is best to err on the side of caution and choose a different storage method. Cardboard 2x2 holders are an affordable and easily accessible option for coin storage. They provide a safe and effective means of preserving your coins without the risk of damage associated with PVC plastic bags.
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Cardboard 2x2's are a good alternative
Cardboard 2x2s are a good alternative to plastic bags for coin storage. They are a favourite of many coin collectors and are archival safe and PVC-free. They are also cheap and can be purchased online. Cardboard 2x2s come in various sizes, including Cent, Nickel, Dime, Quarter, Half Dollar, Small Dollar, Silver Dollar, and three-hole for Cent/Dime and Elongated.
One benefit of cardboard 2x2s over plastic bags is that they do not contain PVC, which can be harmful to coins. Over time, PVC can cause coins to "sweat," ruining copper coins in particular. While Ziploc bags are PVC-free and safe for coins, they can cause abrasions on more expensive coins each time the bag is handled. Cardboard 2x2s, on the other hand, can be stapled closed, avoiding the need to handle the coin directly.
However, some collectors have expressed concerns about the use of staples with cardboard 2x2s, as the staples can scratch coins when inserting or removing them from the holder. To mitigate this issue, collectors can opt for self-adhesive cardboard 2x2s or be careful to use the right-sized holders to minimise the risk of scratches.
Additionally, cardboard 2x2s can be easily stored in storage boxes or pocket pages, providing a neat and organised solution for coin collectors. They are a good option for long-term coin storage and can help protect your collection from damage or degradation.
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Coins can be stored in cedar boxes
While plastic bags are a cheap and convenient way to store coins, they may not be the best option for long-term storage, especially if the bags contain PVC, which can cause coins to sweat and ruin them over time. Cardboard holders or zip-lock bags are recommended as safer alternatives for storing coins.
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Plastic flips, coin tubes, and coin albums are also used
Plastic flips, coin tubes, and coin albums are also popular methods for storing coins. Coin flips, or small plastic containers with dual pockets, are commonly used by coin dealers because of their compact nature and ability to be stored in long cardboard boxes. One pocket stores the coin, while the other can contain a small piece of cardboard with information about the coin. They are protective, prevent scratches and fingerprints, and are relatively affordable. However, they can be made with PVC, which can damage coins over time.
Coin tubes are another inexpensive way to store coins. They protect coins from the environment and are pretty secure, but there is a chance that coins could rub up against each other and get damaged.
Coin albums are perfect for storing individual coins and preventing scratches and dings. They allow you to present your coins together, but some only let you see one side of the coin at a time. Albums with plastic windows that you can slide in and out offer more protection and allow you to see both sides of the coin. However, not all albums are airtight, waterproof, or chemical-free, so preventive measures are still necessary to protect coins from air pollutants, moisture, and chemicals.
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Frequently asked questions
Yes, you can store your coins in plastic bags. Zip-lock bags are a popular option as they are made of polyethylene and do not contain PVC, which can cause coins to sweat and ruin them over time.
Coin collectors have various options for storing their coins, including plastic flips, cardboard flips, coin folders, coin tubes, coin albums, and coin slabs for higher-value individual coins.
Zip-lock bags are generally safe for most coins, but some collectors recommend avoiding them for more expensive coins to prevent any abrasions or toning.
For long-term storage, it is recommended to use multiple layers of protection, such as placing the coins in airtight holders or mylar 2x2s before putting them in a zip-lock bag and then into a specialty-designed coin storage box or safe.
Yes, cedar or wooden boxes are also commonly used for coin storage, especially for inexpensive circulated coins. However, it is recommended to use an inert, virtually airtight holder for the coins before placing them in a wooden box.
