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。

Knowing how much your coins are worth is important for coin collectors and anyone with old coins they want to sell or find the value of. There are many great websites that allow you to look up coin ...

MIAMI -- To avid collectors, coins that stand out as rare or of exceptional quality are worth more than their weight in platinum, silver or gold. Numismatic enthusiasts are often willing to pay a ...

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 ...