NGC is the world’s leading and largest third-party coin grading service, and its independent affiliate NCS was the first professional coin conservation company.

Numismatic Guaranty Corporation (NGC), founded in 1987, heralded the introduction of a new standard of integrity in coin grading. From the beginning, NGC has remained focused on grading collectible coins, tokens and medals accurately, consistently and impartially. As the company has grown to become the leading and largest third-party coin grading service, it has maintained a steadfast and uncompromising commitment to these ideals.

The knowledge, integrity and dedication of NGC’s team of numismatic professionals ensure a level of grading consistency unparalleled among grading services. This record of consistency, built over the years, has helped to foster greater stability throughout the collectible coin marketplace.

NGC is the official grading service of the American Numismatic Association (ANA) and the Professional Numismatists Guild (PNG).

Founded in February 2001, Numismatic Conservation Services (NCS) is devoted to expert conservation of collectible coins, tokens and medals. NCS numismatic professionals have extensive experience in coin conservation techniques and are uniquely qualified to provide expert conservation services for coins of all metals, types and eras.

NCS conservation carefully removes surface contaminants such as PVC, soils, tarnish, carbon spots, verdigris and encrustation from coins. These conservation services are designed to preserve originality, improve eye appeal and provide long-term protection.

NCS is the conservation service of choice of the ANA and PNG.