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

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 ...

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 ...

A microscope’s job is to magnify the minuscule world around us. We can observe the tiniest objects, organisms and materials, and investigate their form, texture and composition, to witness what would ...