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Posted 02/19/2008 12:05 pm
Most chemical solutions to be used on a coin will do the basically same thing as Tarn-X type solutions or a good battery acid. Ruin the coins. If you find your Copper or Copper included coins are darkening, this is just normal Oxygenation. Note that the removal of this is actually removing some of the coins metal. Of course you will have a pretty, shinny coin, but you will loose most of it's value. Copper is in many of our coins as a mixture and that is the most reactive metal so it is the one that usually creates the darkening. If left alone, this CuO will usually further react with Moisture and Carbon Dioxide in the air creating more darkening and in some instances a Greenish Patina.
Again, removing these substances will remove some of the coins metal.
My previous statement about the lack of % on a bottle or can of beer was intended to show how a product we drink every day is lacking in complete ingrediants on the container. Note that some either water downed or made excessive alcohol content beers do list the % such as 3.2 beer
Again, removing these substances will remove some of the coins metal.
My previous statement about the lack of % on a bottle or can of beer was intended to show how a product we drink every day is lacking in complete ingrediants on the container. Note that some either water downed or made excessive alcohol content beers do list the % such as 3.2 beer
