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What is the down side of taking a brilliant proof out of their protective plastic cover?

April 26, 2017brilliant cover plastic proof Protective taking

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What is the down side of taking a brilliant proof out of their protective plastic cover?

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The mirror-like surface of a brilliant proof coin is much more susceptible to damage than the surfaces of an un-circulated coin. For this reason, proof coins that have been cleaned often show a series of fine hairline or minute striations.