Coin Silver Coin silver was once a more common alloy in the United States. Sekarang sudah cukup langka dan namanya menimbulkan sedikit kebingungan. Teknisnya “koin perak” paduan adalah .900 perak, atau 90% perak dan 10% tembaga. Nama “koin perak” is because metalsmiths historically made items from melted down […]
