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 ...

Rare coins, mint errors and key dates could turn everyday pocket change into big money. Learn what to look for.

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 ...

Cleaning and restoring coins can be done so well that after one or two hundred years, it is hard to find a collectible precious metal coin that has not been cleaned at some point. The coin dealer can ...