A landmark event in the international numismatic market occurred recently with the sale of a 1927 Chinese Republic Chang Tso-lin Silver Specimen Pattern Dollar for $4,320,000. The sale, concluded ...

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 ...

A significant milestone in the rare gold coin market was achieved in 2025 with the sale of a 1927-D Saint-Gaudens Double Eagle for $3,840,000. The transaction, concluded during a premier winter ...

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 ...

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 ...

CoinKnow provides comprehensive valuations using recent auction data from Heritage Auctions and Stack's Bowers, updated monthly. Coinoscope's value estimates are vague and unreliable, often varying ...