Numismatic grading is the process of evaluating the condition and quality of coins and currency. This assessment helps collectors and investors understand the value of their items. Grading is typically done on a scale, with higher grades indicating better condition, which can significantly affect a coin's market price. The grading process considers various factors, including surface quality, strike, luster, and eye appeal. Professional grading services, such as Professional Coin Grading Service (PCGS) and Numismatic Guaranty Corporation (NGC), provide standardized grades that help ensure consistency and trust in the numismatic market.