How to reduce tarnishing - Storing Silver

Place the tubes in coins or store the coins in individual capsules, and place them in a container with the carbon or charcoal" that you can buy from pet shops used for fish tanks. This should help prevent tarnish as the carbon traps some of the hydrogen sulfide that causes tarnish.

Use silica gel along with the charcoal to prevent condensation and help can stop rust, mildew, corrosion and spoilage. Dehumidifiers are recommended for large storage of silver bullion.

Refrain from storing your silver coins in zip lock bags or plastic bags. If you place the silver coins in zip lock bags, they would rub against one another and might cause abrasive marks to develop on the surface of the coins. Another reason is that the material used for storing the notes and coins should be acid-free. Thus, we should not use those with PVC material as it traps moisture and releases acidic gases.

Remember that bullion coins are are produced out of precious metals and are typically sold to investors. Even though bullion coins have a denomination and are legal tender in the country from which they were minted, their value is determined by the spot price of their metal content on the world market, rather than its appearance, collectible value or numismatic value.