Have you ever stumbled upon an old coin and wondered, “Is this worth anything?” You’re not alone! Thanks to modern technology ...
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 ...
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 ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results
Feedback