看看评级公司的声明 (https://www.ngccoin.com/coin-grading/ngc-guarantee/):
-不保证 银币上的斑点、起雾、PVC 和腐蚀(spotting, hazing, PVC and corrosion)的情形
-铜、青铜、黄铜或镀铜硬币,本保证的等级部分将在其封装日期 10 周年之後不再适用 (with regard to copper, bronze, brass or copper-plated Coins, the grade portion of this Guarantee will no longer apply after the 10-year anniversary of their date of encapsulation)
看看评级公司的声明 (https://www.ngccoin.com/coin-grading/ngc-guarantee/):
-不保证 银币上的斑点、起雾、PVC 和腐蚀(spotting, hazing, PVC and corrosion)的情形
-铜、青铜、黄铜或镀铜硬币,本保证的等级部分将在其封装日期 10 周年之後不再适用 (with regard to copper, bronze, brass or copper-plated Coins, the grade portion of this Guarantee will no longer apply after the 10-year anniversary of their date of encapsulation)
看看评级公司的声明 (https://www.ngccoin.com/coin-grading/ngc-guarantee/):
-不保证 银币上的斑点、起雾、PVC 和腐蚀(spotting, hazing, PVC and corrosion)的情形
-铜、青铜、黄铜或镀铜硬币,本保证的等级部分将在其封装日期 10 周年之後不再适用 (with regard to copper, bronze, brass or copper-plated Coins, the grade portion of this Guarantee will no longer apply after the 10-year anniversary of their date of encapsulation)