Green mold on copper coims

General discussions about canadian coins.
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Green mold on copper coims

Post by coindabbler » Sun Oct 16, 2016 11:14 am

Hi, I was recently given $13 of relatively new cents (1960's to 2011). Most of them have green mold spots or major cases of the copper mold.

How do I get rid (clean up) this contamination. Does anyone have a home brew that will
stop the deterioration of the coins.

Thanx in advance


Bill in Burl
Posts: 854
Joined: Thu Sep 04, 2008 7:41 am
Location: Golden Horseshoe, ONT

Re: Green mold on copper coims

Post by Bill in Burl » Sun Oct 16, 2016 6:21 pm

If it's soft, then acetone. If hard, there is nothing you can do as it has chemically corroded the metal.
Bill in Burl

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