https://franks-frederick-2.fed....eratedjournals.com/a
In general, they mustn't be cleaned. Many exceptions but study on this starting. It is wise to exactly what you accomplish lest your precious metals lose cost. They should not be held in any containers containing PVC; vinyl or plastic. Suppress turn coins a damaging green. Living green is not suggested here. Uncirculated: This recent minting is the uncirculated collectible, hand-loaded in the coining press, struck on specially burnished blanks and carries the "W" mark
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