This book is a compilation of articles on coin chemistry written during the last 19 years. Some deal with the cleaning of coins to remove oxidation products and/or foreign matter and some deal with good coin care in terms of preventing chemical wear from oxygen and sulfur.
This book is a compilation of articles on coin chemistry written during the last 19 years. Some deal with the cleaning of coins to remove oxidation products and/or foreign matter and some deal with good coin care in terms of...
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