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 ...
For America’s 250th anniversary, the U.S. Mint is releasing specially designed coins this year, including 250,000 quarters bearing the “July 4th” mark. Now, a coin-grading company said the first ...
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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