1938 silver dollar corrosion
Posted: Sun Dec 29, 2019 11:34 am
1938 silver dollar corrosion,
the coin is made of Alloy: 80% silver, 20% copper.
how come silver and copper corrode or create rust?
is it because they put other Alloy?
the coin is made of Alloy: 80% silver, 20% copper.
how come silver and copper corrode or create rust?
is it because they put other Alloy?