USA 1991 Silver Eagle Toned 1 Dollar Coin

USA 1991 Silver Eagle Toned 1 Dollar Coin USA 1991 Silver Eagle Toned 1 Dollar Coin Coins

USA 1991 Silver Eagle Toned 1 Dollar Coin as in scans, Thanx for looking, post extra at cost, Fee's extra to buyer if any.

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1 month
@Andromeda Gaming Rainbow toning on silver coins occurs when the metal undergoes a slow natural oxidation process. When trace amounts of sulfur or other airborne chemicals react with the silver, it forms a microscopic layer of tarnish.The rainbow effect happens through a physical phenomenon called thin-film interference, which is the same principle that causes a slick of oil on a water puddle to show vibrant colors.
1 month
Why is the coin rainbow