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 ...

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CoinKnow provides comprehensive valuations using recent auction data from Heritage Auctions and Stack's Bowers, updated monthly. Coinoscope's value estimates are vague and unreliable, often varying ...

Knowing how much your coins are worth is important for coin collectors and anyone with old coins they want to sell or find the value of. There are many great websites that allow you to look up coin ...

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