Part of the appeal behind collecting old coins is that they feel like small pieces of history. Plus, they often gain value over time if they stay in good condition, which is only possible through proper storage methods. Here are a few best practices to keep your coin collection in top shape.

Do:

Keep the coins in holders.

Commonly measured 2”x2”, cardboard coin holders will protect your coins from being damaged or worn down by oxygen, air pollution, or water. They also keep the coins from scratching each other.

Cardboard holders only cost a few cents and are adequate in most cases. However, hard-plastic holders are tougher and more effective at keeping out unwanted chemicals. They’re more expensive, but if you want to ensure your coins’ safety, plan to spend more.

Ensure the climate is right.

The humid Hawaiian climate combined with the salty air from the sea can corrode or wear down old coins. Copper coins are especially susceptible, but silver and gold are vulnerable too. Store your collection in a cool, dark, airtight area, free of extreme temperatures or exposure to the elements.

Don’t:

Touch them without holders.

As much as possible, only handle your coins when they’re inside holders, so the natural oils and acids on your skin don’t alter them. If you must touch them directly, hold the edges.

Let in harmful chemicals.

No matter their type of metal, old coins can be permanently damaged by sulfur, gas, and chlorine, including PVC. Choose storage materials that don’t contain PVC and effectively block these and other chemicals.

If you’re interested in learning more about your old coin collection or adding to it, head to Hawaiian Islands Stamp and Coin in Honolulu. Since 1973, the experts have offered a wide variety of coins to buy in addition to appraisals of existing collections. They’re often entrusted with handling coins for banks and government agencies as well. To learn more about their services, call them today at (808) 531-6251 or check out their website.