What is a Red Copper Coin?

By A Mystery Man Writer

We receive a lot of questions about what constitutes a so-called Red copper coin. For many, Red is the most desirable coloration on a copper coin, yet it’s also among the scarcest, particularly when considering vintage copper coins.

We found red coins today, and they don't all look like paint. Is there a chemical reaction that could have turned them red? Not to mention, it's not just quarters (that used

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