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All Forums Category: US Coins and Currency Forums Forum: US Classic and Colonial Coins

Copper + Sulfur = ? What Should I Do?

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ElmerFlick
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United States
110 Posts
 Posted 02/06/2022  4:13 pm Show Profile   Bookmark this topic Add ElmerFlick to your friends list Get a Link to this Message Number of Subscribers
Ive got some copper colonials in old tan 2x2 paper envelopes that I'm pretty sure have a sulfur content. I noticed the coin surfaces are sort of hazy and seem like they have a film on them (no corrosion or copper disease). What is this, and what, if anything can/should I do to nuetralize what is occurring? Anyone else ever notice this? For starters I'm going to put them in standard 2x2 with cellophane windows. I dont collect a lot of copper because of its reactivity and this is further example why.

Thanks in advanced.
T-BOP
Rest in Peace
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United States
18456 Posts
 Posted 02/06/2022  4:26 pm  Show Profile   Bookmark this reply Add T-BOP to your friends list Get a Link to this Reply
Acetone soak first . Sounds like a good candidate for Verdi-Care treatment not that the coins have verdigris but it will remove the haze and film from them . And keep them from developing any other impurities
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All Forums Category: US Coins and Currency Forums Forum: US Classic and Colonial Coins



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