A certificate of authenticity, or COA, is somewhat like an assay certificate or card. Usually the seal is on a piece of paper or the actual certificate, and it proves that the coin or bullion is authentic. Unlike an assay, …
Legal Counselor and Attorney at Any Court
A certificate of authenticity, or COA, is somewhat like an assay certificate or card. Usually the seal is on a piece of paper or the actual certificate, and it proves that the coin or bullion is authentic. Unlike an assay, …