This 2000 Sydney Olympic Games Gold Proof Coin Set is mainly for collecting. Keep it in a dry and clean place to prevent it from getting rusty or damaged. When you handle the coins, it's better to wear soft gloves to avoid leaving fingerprints. Since it's only available for store pick - up, make sure to visit the store during business hours to get your set. Don't try to clean the coins by yourself as improper cleaning may damage their value.