Toning (coin)

A Morgan dollar with rainbow toning.

Toning on a coin is the change of colour brought about through oxidization. Toning can range from beautiful to ugly, and thus can alternately add or detract from a coin's value.[1]

References

  1. ↑ "What is Coin Toning? How Does It Affect Coins and Their Value?". CoinNews.net. Retrieved 20 October 2015.
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