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Is Tarnish Bad? How It Affects Value and Eye Appeal

ByGeoff W.

Tarnish is the thin layer of surface discoloration that forms on a coin when it reacts with elements in the environment like oxygen, sulfur, or moisture. It’s not deep corrosion, and it doesn’t usually eat into the metal. Instead, tarnish sits on the surface and changes the coin’s color. Sometimes slightly, sometimes dramatically. It’s most…

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Before You Buy That Coin: Know Your Stuff or Keep Your Wallet Closed

ByGeoff W.

One of the fastest ways to lose money in coin collecting is buying something you don’t understand. There’s no checklist that can replace actual knowledge. If you don’t know what the coin should look like, you won’t know what’s off when you see it. And once the cash is gone, it’s usually gone for good….