NGC (Numismatic Guaranty Company) often grades very rare coins by meticulously evaluating their condition, authenticity, and rarity. These rare coins undergo a detailed examination by a team of experts who assess features like strike quality, surface preservation, and luster. NGC uses a standardized 70-point Sheldon scale to assign a grade, with 70 representing a perfect coin. For particularly rare or historically significant coins, NGC’s grading ensures they are properly authenticated and prese