Some of the coolest coins out there are numismatic (also known as collector's) coins, proof sets, and brilliant uncirculated sets. These are usually low mintage, historical in natural, and brilliantly beautiful. They even make great holiday gifts. They're also terribly easy to damage and you can ruin their value as collector's pieces terribly easily.
So how do you handle these coins long enough to transfer them into their permanent holders so that you can safely look through or display your collection?
1.) Don't handle them with your bare hands.
Ideally, handle each coin as little as possible and then only when you are wearing clean, cotton gloves. If you absolutely must handle your coins without gloves for some reason, make sure that you wash and dry your hands thoroughly with an antiseptic to remove as much oil as possible from your fingers.
2.) Only touch the coins by the edges.
With or without gloves, only touch uncirculated coins by the edges (rims). Do not, under any circumstances, run your finger across the face or the back of the coin—doing so changes the coin from an uncirculated coin to one that's been handled, and the faint oils in your fingers are enough to leave a tiny impression of your fingerprint that will mar the surface of the coin forever within a matter of minutes. In fact, the fingerprints will eventually become faint smudges that are visible to the naked eye.
3.) Do not talk or cough when holding your coins.
It may sound extreme, but wearing a face mask while you handle your coins is not actually an absurd idea. The tiniest drop of moisture from your saliva can eventually turn into small dark specks of corrosion that will ruin the brilliance of your numismatic pieces.
4.) Make sure the surface you're working over is covered with a soft cloth.
A soft cotton or velvet cloth is a necessity when you're working with your coins, just in case you drop them. It'll provide a safe landing for the coin, hopefully preventing any damage to the surface or edges.
5.) Store your coins in holders without PVC.
PVC is the chemical that makes plastic pliable, but it has a tendency to breakdown and yellow with age. Make sure that you store your coins in holders that are made of Mylar or another safe plastic. If you're unsure about what sort of flip book or plastic casing to store your coins in, check with a local dealer. They usually have some they are willing to sell, or will at least show you what kind you need.
Buying a proof set or a set of collector's coins or giving one as a gift can be a thrilling experience, as long as you take the necessary precautions.
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