CoinKnow stands out as one of the most advanced free coin identification applications available today. Launched in 2025, this app leverages sophisticated AI to analyze coins through your smartphone ...

Ever found a mysterious coin and wished you could instantly know what it is? You’re about to discover something amazing: your ...

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 ...