The storage method and maintenance method of commemorative coins are as follows
Commemorative coins are legal tender issued by a country to commemorate major international or national political, historical, cultural and other important events, outstanding people, historical sites, rare animals and plants, and sports events. It includes common commemorative coins and Precious metal commemorative coins. The quality is general or refined, and it is issued in limited quantities.
Ordinary commemorative coins can be circulated, but precious metal commemorative coins cannot be circulated. Chinese commemorative coins have a specific theme, are designed and manufactured by China Banknote Printing and Minting Corporation, and are legal tender issued by the People's Bank of China. Commemorative coins are usually issued to commemorate major political and historical events in our country, traditional culture and other things of special significance. Ordinary commemorative coins have the same functions as the current circulating renminbi, and circulate at the same value as the same denomination renminbi.
How to store commemorative coins
First of all, avoid direct collision and friction with hard objects, and do not put several coins in one pocket at the same time Inside, use softer cloth or paper to wrap separately.
Secondly, it is necessary to prevent hand stains. When the commemorative coins leave the factory, they are equipped with a thin, sealed transparent plastic bag to protect the coin surface from oxidation. Do not take it out easily and touch it directly with your hands. When viewing commemorative coins, you should wear thin gloves if possible, and pinch the edges of the commemorative coins with your thumb and index finger to prevent sweat stains from polluting the coin surface.
Again, avoid contact with acidic substances.
Souvenir coins should be stored in a ventilated and dry place.
How to maintain commemorative coins:
How to clean gold coins, gold coins do not actually need to be cleaned. If it gets dirty, just wash it in warm soapy water, then rinse with clean water, and put it in a soft cloth to absorb the water.
The cleaning method of silver coins, the method of cleaning silver coins firstly depends on the oxidation degree and fineness of the silver coins. If the silver coin with high silver content is only slightly oxidized, it is best to use ammonia solution plus sodium carbonate solution and toothpaste to make a paste to clean, or use edible white vinegar with a small amount of water, and soak the silver coin in its solution for a few minutes. Dip a cotton ball into the solution and gently wipe the coin surface. After the oxide layer on the coin surface is dissolved, rinse it off with water.