Discussion in 'Error Coins' started by shilines, Oct 19, 2021.
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Maybe less time than you think. Really depends on the conditions around the event. Coins stacked in a drink holder in a hot car accelerate the decay of Zincolns especially. Easy to get those rings in that situation especially if you add a little French fry salt. And stacked coins left around a swimming pool will stain faster too. Witness marks are left behind and tone at a different rate.
@Kevin Mader said. I see it often. Drinks spilled in cup holder, coins sitting on top of each other. It's damage
It's a deep stain, deep into the paper-thin copper layer. Use some nevr-dull on it. You'll be amazed at how shiny it becomes in very little time/work. We used to use it to shine the brass all over the ship (USS Midway) back in the day.
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