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 ...
Today's coin identifier app technology uses advanced AI to instantly recognize coins, estimate values, and even detect rare errors that could be worth thousands of dollars.
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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