Calipers aid measure the coin’s thickness and width. Eventually, a robust magnet can be employed to expose fakes created employing iron or metal with just a thin layer of gold or silver on major. For silver rounds, a lot of collectors make use of the “ping” exam. This cost discrepancy https://irs-approvedgold75173.blog2freedom.com/36076277/precious-metals-custodian-fundamentals-explained