I know cleaning coins is considered taboo, but won't the blue oxidization on the pennies spread like cancer unless it's removed? I'm not sure how to approach the Morgan either. Thanks in

Science Experiment: How to Clean Pennies - Teach Beside Me

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I know cleaning coins is considered taboo, but won't the blue

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I know cleaning coins is considered taboo, but won't the blue oxidization on the pennies spread like cancer unless it's removed? I'm not sure how to approach the Morgan either. Thanks in

Lhsp journal 2011 2012 the art makers by LSWA - Issuu