I pulled this coin from a roll from the bank several years ago. this was the only non-plated coin in the roll. I also went back to the bank and bought the rest of the rolls they had and still this was the only one.
I was told by 1 dealer that water or moisture did it, but I dont know. The images attached are at 35X.......any ideas?
I have a few that look like that... carry an MS on in your hand for awile and sweat on it... it'll come out looking like that... I also believe they are clad...not plated.
The golden dollar planchets are indeed clad and not plated. A coin missing both outer clad layers would be noticeably light and it would not have the same level of detail as a normal coin because of the thinness of the planchet. The John Adams dollar has sustained environmental damage.
most decorative pools and water fountians use alot of chemicals that cuase coins to oxadize
As a teenager cleaning pools one summer I had to remove 100's of dollars in change from a concrete landscaping pond. Under water you sweep the coins into piles withe a strong broom and scoop um out. the damage is very corrosive to copper coins and not quite as bad to nickle clad.
i suspect the dollar coins are very high in copper and corrode eazy
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