Views: 0 Author: Site Editor Publish Time: 2022-03-01 Origin: Site
For a long time, the term commemorative coinis very popular and seems to have become a synonym for collecting coins. There is a difference between them. A commemorative coin is a kind of coin specially issued by sovereign issuers (the United States needs to be approved by Congress) to commemorate someone, or something. Its purpose is to give full play to its propaganda function with the help of the "mass media" of coins. However, commemorative coins can be either in circulation or in the collection. The commemorative coin we produce is a kind of ordinary custom-made souvenir, which can be felt by people with excellent workmanship. How about the material composition and preservation of the coin?
l The material of the coin
l How to save coins
The material of the coin
Although coins are made of metal materials with certain hardness, it seems that they are not easy to be damaged. In fact, it is not easy to preserve coins. The appearance of coins can be divided into 70 grades according to American Standard. The correct preservation method should slow down or stop the corrosion process of coins, avoid hard injury, and try to keep the original appearance grade. The commemorative coin produced by our factory is made of zinc alloy or brass. The coins made of these two metals are of excellent quality, especially in the aspect of rust prevention. They are excellent materials for making commemorative coins. For the alloy, sometimes it depends on the metal with more active chemical properties, such as pure gold, which has better stability. When copper is added to gold to form the alloy, the coin is prone to appear black spots. But brass coins are more corrosion resistant in the atmosphere than those made of pure copper.
Coinsgenerally do not need to be cleaned, especially not with ordinary rubber or commercially available glass fiber wiping sticks, which will scratch the surface of the coin. If there is green mucus produced after packaging harmful materials on the surface of the coin, it can be cleaned with absolute alcohol. The stains and fingerprints on the coins can also be cleaned with alcohol, which is effective for new stains and can prevent further erosion of the coins by the stains and fingerprints. For coins with large dirt and particularly dirty, ultrasonic cleaners can be used to clean them when possible, and alcohol should be used as the cleaning liquid at this time. Coins should be hung in the cleaning liquid in a mesh bag to prevent the coins from directly contacting the inner wall of the washing machine and causing damage because the mechanical vibration of the inner wall will damage the coins when they collide with the coin. In this way, dirt can be removed without scratching the coin.
Pingyang Jiahong Crafts Factory is a professional crafts manufacturer, specializing in the production of metal craft products such as keychains and coins. We have more than 20 years of experience in crafts making. We use advanced industrial technology to produce coins, and the produced coins are of good quality and moderate prices. We look forward to cooperating with you with quality service