When handling coins, use clean hands and cotton gloves to prevent oil and grime transmission. Hold coins by the corners to avoid fingerprints and scratches.
Avoid the need to clean coins. Cleaning can damage coins, erase natural tone, and lower their value. Only skilled numismatists should clean.
Place coins in containers or capsules made of materials without PVC, as it might damage them over time. Coin holders safeguard them from the elements.
Store coins in a regulated environment to ensure stability. Low humidity (40-60%), consistent temperature (68-72°F or 20-22°C), and light protection are ideal.
To protect your rare coins, consider investing in a safe or safety deposit box at a bank. This protects against theft, fire, and environmental harm.
Store coins in sealed containers to prevent exposure to air and environmental elements. Coins rust and corrode from oxygen and moisture.
Consider using desiccants to absorb remaining moisture in storage containers. This keeps coins dry for long-term preservation.
Include coin facts such as date, mint mark, and other details on each holder or capsule. Track your collection with a complete inventory or diary.
Avoid PVC materials as they can harm coins over time, leaving green residues called "PVC damage." Keep holders and storage materials PVC-free. Use Mylar or other archival holders.