Coin grading is the process by which a certified numismatist determines the grade, or physical condition, of an existing coin. Once the grade is determined, the value of the coin can then be ...
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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Most valuable wheat pennies: Key dates and mint marks
Wheat pennies hold a special place in the hearts of coin collectors, particularly in the United States. First minted in 1909, ...
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