As the precious metal commemorative collections are heating up, the gold and silver commemorative coins that have always been on the high are beginning to be loved by more and more collectors. However, in the collection, many local Tibetans are not very concerned about the collection and maintenance of gold and silver coins due to lack of understanding. “Gold and silver coins are not as fragile as porcelain and jade. Can you put them anywhere?†For the views of Tibetan friends, experts from the Provincial Collectors Association expressed different views: “In fact, gold and silver coins should be properly maintained, especially rare varieties. Otherwise, in the future, the value will be lowered due to quality reasons, and regrets will not be reached." Experts pointed out that in order to isolate the air, the protection of gold and silver coins generally has two methods: airtight and vacuum packaging. Airtight means to isolate the air but not to clean the air inside the package. The vacuum encapsulation places the packaging material in close contact with the surface of the coin, which can damage the coin. Precious coins should be packaged in a single package. The gold and silver coins are soft in texture, rubbed against each other, and are also damaged. The most prominent part of the relief is the most easily scratched, so the gold and silver coins are preferably in a single package. Before entering Tibet, it should be dried and should not be touched by sweat. The coin cabinet, enamel and book should be placed in a dry and dull place to avoid the moisture and rust of the coins. For gold and silver coins, it is generally not advisable to play directly. In particular, you should not touch refined coins, uncirculated coins or high-end coins. The place where the hand touched the coin must be the place where the corrosion first turns black. If you really want to take a coin, use a clean soft paper or cloth to separate the edges of the coin. Sapphire Window As Phone Cover Optical Glass Window,Sapphire Window For Optics,Hard Sapphire Glass Window,Customized Optical Glass Window ShanXiZhongJuJingKe Semiconductor Co., Ltd , https://www.sxzjjk.com.jpg)