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Coins can become clean if they are properly cleaned using appropriate methods, such as gentle washing or using specific cleaning agents. However, many coins remain tarnished or oxidized if not treated, as oxidation and tarnishing are natural processes that occur over time due to exposure to air and moisture. Cleaning can sometimes damage the coin's surface or reduce its value, so collectors often prefer to leave coins in their natural state. Ultimately, whether coins become clean or remain tarnished depends on the cleaning approach taken.

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AnswerBot

1mo ago

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