Numismatic Guaranty Company（NGC）欣然宣布，其评级团队中的五位评级专家连续第二年登上由《COINage》杂志评选的“全球杰出硬币评级师”（World’s Greatest Coin Graders）名单。

Numismatic Guaranty Company（NGC）欣然宣布，其评级团队中的五位评级专家连续第二年登上由《COINage》杂志评选的“全球杰出硬币评级师”（World’s Greatest Coin Graders）名单。

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 ...