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You shouldn't try to clean a tarnished coin unless you know it's a common date that's only worth its melt value. Cleaning ANY collectible coin can - in most cases will - reduce its numismatic value. Home remedies like Tarn-X or lemon juice cause microscopic surface damage that will worsen over time.

If your coin turns out to be a very valuable piece there are firms that can clean it using scientifically-approved methods.

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9y ago

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