Are all coins certified and encapsulated by NGC covered by the NGC Guarantee?
A. The NGC Guarantee does not apply to copper, bronze or copper nickel coins graded by NGC prior to April 1, 2000. To the extent that the NGC Guarantee applies to copper, bronze or copper nickel coins, the NGC Guarantee expires with respect to such coin(s) on the 10-year anniversary of the date of encapsulation by NGC. Additionally, any NGC-certified coin deemed by us to be representative of a clerical error is not covered by the NGC guarantee. Clerical errors may be returned to NGC for correction of labeling at no charge to the submitter.