1983 hole where mint mark was

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T.Montana
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1983 hole where mint mark was

#1 Unread post by T.Montana » Mon Feb 12, 2018 2:28 am

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mhonzell
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Re: 1983 hole where mint mark was

#2 Unread post by mhonzell » Mon Feb 12, 2018 7:05 am

It is known as "zinc rot".

The copper plating around the mint mark is usually compromised and allows the zinc underneath to corrode.

T.Montana
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Re: 1983 hole where mint mark was

#3 Unread post by T.Montana » Mon Feb 12, 2018 7:10 am

Makes perfect sense. Now that you say that...I remember reading about the zinc rot. Thank you

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PALH1
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Re: 1983 hole where mint mark was

#4 Unread post by PALH1 » Mon Feb 12, 2018 10:50 am

mhonzell wrote:
Mon Feb 12, 2018 7:05 am
It is known as "zinc rot".

The copper plating around the mint mark is usually compromised and allows the zinc underneath to corrode.
:agree:

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