United States MintConnecting America through Coins
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Connecting America through Coins
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Caring for Your Coin Collection

To retain the value and look of your coin collection, proper care and storing are essential. Use this page to make sure you have the right tools for the job.

towel, magnifying glass, glove, coins in coin holders
 
To begin, be sure to have a high-quality magnifying glass for coin inspection and a plastic ruler (metal rulers may scratch coins).
 
You'll also need a general coin reference book that includes information on dates, mint marks, major varieties, grading guidelines, and prices.
 
Always use a soft cloth or pad to hold coins when viewing them. You could also use a pair of soft cotton gloves.
 
Good lighting is important, too. Last but not least are coin holders or albums for storing your coins.
 
towel, magnifying glass, glove, coins in coin holders

Storing Your Collection

 

All modern coin sets and coins should be bought and sold in original cases and capsules. The Mint sells coin sets in protective plastic cases called lenses or in folders. Individual coins are packaged in capsules fitted into folders or boxes.

In addition to original holders, other storage options include 2" x 2" cardboard or plastic holders, plastic tubes or capsules, sleeves or envelopes, and albums.

For high-value coins, use hard plastic holders. Professional coin grading services use sealed holders called slabs to protect authenticated and graded coins.

Use acid-free cardboard and plastic holders free from polyvinyl chloride (PVC). Acid and PVC can ruin a coin’s surface. PVC eventually coats a coin with sticky green slime.

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Other Tips for Storage

Keep coins cool and dry

Sharp changes in temperature and moisture cause discoloration that devalues coins. Avoid talking directly over coins as tiny droplets of saliva can also create spots on a coin. Just like fingerprints, these marks are difficult to remove.

Save documentation

Some coins and coin sets come with a certificate of authenticity and/or an information card.

Keep them safe

A safe-deposit box at a bank is one option. If you have a home collection, ensure that your home insurance covers full replacement costs.

Handling Your Collection

a gloved hand holding a coin by its edges

Hold a coin by its edges between your thumb and forefinger over a soft towel or surface. Wear soft cotton gloves to protect the coin’s surface from fingerprints and the natural oils on your skin, which can be corrosive.

 

While you may be tempted to polish your coins to make them look shiny and new, proceed with caution. Polishing and/or cleaning coins can reduce their value.

 

Older coins that show deep age coloration are more desirable than coins whose surfaces have been stripped away by improper polishing or cleaning. If you do polish a coin to remove dirt, use mild soap and water. 

a gloved hand holding a coin by its edges

Once you’ve washed the coin, pat it dry with a soft towel. Brushing or rubbing can scratch a coin’s delicate surface. And now that you know how to properly care for and store your collection, remember the most important part of coin collecting . . . Have fun!