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Preservation and maintenance of challenge coins

Source:http://en.toproadpins.com/news/3.htmlRelease time:2017-10-11

challenge coin refers to both sides of the commemorative medallion, generally round in the majority, thickness of 3mm, diameter ranging from 38.1mm to 50.8mm (generally in inches abroad, respectively, 1-1/2, 1-3/4, and 2). The materials are copper, zinc alloy and so on.

challenge coin

Physical preservation
First of all, to avoid direct collision, friction and hard, and not a few coins in a pocket, cloth or paper used soft packing respectively.
The second hand to prevent pollution, with a thin layer of sealed transparent plastic bag two-sided coin factory, make money from surface oxidation, watching the two-sided coin, the coin edge pinch the thumb and forefinger to prevent perspiration coin surface pollution.
Again, avoid contact with acidic substances.
The maintenance of double coin is as follows:
Challenge Coin cleaning method, challenge coin actually does not need cleaning. In case of soiling, just clean it in warm soapy water, rinse it with water, and then dry the water in two soft cloth.
The above is my company to share the preservation and maintenance of the challenge coin method, you get arrived?!

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