1938 silver dollar corrosion

General discussions about canadian coins.
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spiess
Posts: 4
Joined: Wed Dec 14, 2016 1:57 pm

1938 silver dollar corrosion

Post by spiess » 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?

Bill in Burl
Posts: 694
Joined: Thu Sep 04, 2008 7:41 am
Location: Golden Horseshoe, ONT

Re: 1938 silver dollar corrosion

Post by Bill in Burl » Mon Dec 30, 2019 7:13 am

It isn't rust .. has to be some other chemical reaction ... or else the coin is a fake and it has iron in it.
Bill in Burl

spiess
Posts: 4
Joined: Wed Dec 14, 2016 1:57 pm

Re: 1938 silver dollar corrosion

Post by spiess » Sun Mar 29, 2020 6:50 pm

ok,thanks

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