Keep handling of the coin itself to the bare minimum. In the world of collectible coins, value is directly correlated to condition and quality, which is lessened when scratches, smudges, fingerprints or scratches are present. When it's absolutely necessary you should hold them on the edges.

It is not recommended that you clean your coins, but if you do, you should be sure to entrust the process to a specialist. In fact, the patina developed on a coin over time may actually be a desirable quality to collectors and a cleaned coin could actually decrease it's potential value.

The most prized Silver eagle proof dollars in your collection should be stored in an excellent holder that safeguards against fingerprints, dust, and even moisture. Stapled or taped packets don’t give maximum protection, but there are other protectors in the market that can also guard effectively against moisture. Protecting your collectible coins from water damage is paramount; choose a dry, controlled-temperature space, never a damp basement or cellar.