Copper, silver, nickel, and gold coins should strictly never be cleaned. But if you do really want to get stuck in and have a go at cleaning some coins, we recommend that you experiment on some modern loose change instead. ... Leave the coin to soak for about 5 minutes or so and then check on its condition.

How do you clean silver coins without losing value?

Pour your distilled white vinegar into your shallow bowl. There should be enough vinegar to completely cover your coins. Gently place your coin or coins into the vinegar. Let your coins sit for at least 30 minutes.

Should you clean tarnished silver coins?

Never try to remove the natural oxidation from coins, such as the tarnish on silver coins. ... Removing it will damage the coin's surface and greatly reduce its value. In other words, you should never use dips, polish, or chemical solutions to clean your coins.