If you keep your gold and silver coins in a protective barrier such as in a plastic case, then you do not have to worry about keeping them clean. However, if for some reason your coins show muddy, dirt or other superficial wear and tear, there are some ways to clean it.
The simplest thing you can do in your own home is to first of all, place a large bowl on a flat surface. Then get some aluminum foil, fold it, and put it into the bowl. Then fill the bowl with hot water. The hotter the wataer, the better it can be, because the heat increases the speed and intensity at which the chemical reactions take place. Now, sprinkle some baking soda in hot water. Finally, add some table salt in it. Now, put the coins that you wish to untarnished and submerge in this solution. Leave them there for a while and look until all of the tarnish is gone, then flip a coin over so that all of the coin is exposed to the cleaning solution. When the tarnish is removed, the valuable silver the means.
This cleaning technique only work on the tarnish. It works through the chemical reaction between baking soda, table salt, aluminum foil and the chemicals that make up the tarnish. After the chemical reaction is done, it uses up the muddy, removing it from the coins. However, if your silver coins have dirt on it you usuallyclean it by very gentle scrub that away with a very soft toothbrush and hand soap or dish soap. However, this is not recommended because it can damage the coin.
For your gold, you have to be more cautions. This is because gold is a very soft metal. A mixture of baking soda and water can be put on a soft toothbrush. The toothbrush used for cleaning gold coins should be the very smooth one. After that, rinse the coin in the water and put it somewhere to dry.
Be careful if you have a brilliant uncirculated coins or special coin collectors, etc. This cleaning techniques can dramatically lowering the value of those coins. However, if you have gold or silver and use it only as an investment hedge against the inflation and devaluation, and the coins are not worth drastically more than its value as metals, then this simple cleaning technique could be used for your gold and silver coins, bullion or bars. Just remember to be very gentle in treating your coins.
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