GRAND RAPIDS, MI - A Grand Rapids-based inventor has developed a first-of-its-kind device designed to transform how collectors grade and value their coins. The OCS200, created by Richard Colonna of ...
Numismatics, or coin collecting, has been a popular pastime in the United States (and many other countries) for more than two hundred years. In order to understand the hobby, the novice collector must ...
Need help identifying this coin and checking its value? Stop guessing—CoinKnow coin value app provides instant price analysis and accurate market valuations for your coins.
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