Coin appraisal is the process of evaluating the value of a coin based on various factors such as its rarity, condition, and historical significance. Appraisers often use a grading scale to assess the coin's quality, which can significantly influence its market price. During an appraisal, experts may also consider the coin's demand among collectors and its current market trends. This information helps determine a fair value, which can be useful for selling, insuring, or simply understanding the worth of a coin in a collection.